Ever dreamt of a vibrant, tangy rhubarb pie with a silky-smooth custard filling, but without the fuss of making or rolling out a pie crust? What if you could create a naturally gluten-free and incredibly delicious dessert that celebrates the fresh flavors of spring? Get ready to discover pure bliss with our Crustless Rhubarb Custard Pie – it’s the simplest way to enjoy this classic treat!
Table of Contents
Table of Contents
The Essence of Spring: Crustless Rhubarb Custard Pie Unveiled
Our Crustless Rhubarb Custard Pie is a revelation in simplicity and flavor. Imagine tender, tart rhubarb pieces nestled in a creamy, sweet custard, all baked until golden and set. It delivers all the comforting taste of a traditional rhubarb custard pie, but by ditching the crust, it becomes incredibly easy to prepare and naturally gluten-friendly. This pie highlights the beautiful balance of sweet and tart, making it a refreshing and satisfying dessert.
This recipe is designed for maximum convenience without sacrificing an ounce of flavor or elegance. It’s perfect for spring gatherings, holiday meals, or simply when you want a wholesome and delicious treat with minimal fuss.
- Yields: 8 pieces (1 9-inch pie)
- Total Time: Approximately 50 minutes (including prep and bake time)
- Active Time: About 10 minutes
- Difficulty Level: Super easy! If you can blend and pour, you’ve got this.
Beyond its incredible ease, Crustless Rhubarb Custard Pie offers a delightful balance of textures and flavors. The soft, tangy rhubarb melts into the silky custard, creating a truly comforting experience. It’s a fantastic way to showcase fresh rhubarb and is sure to become a cherished springtime tradition.
The Essentials: Ingredients for Your Crustless Rhubarb Custard Pie Masterpiece
Creating this delightful Crustless Rhubarb Custard Pie requires just a few simple ingredients that work together to deliver that iconic flavor and creamy texture. Here’s a detailed look at what you’ll need, why each ingredient is crucial, and some fantastic ideas for substitutions and variations.
Substitutions/Variations: Any neutral cooking spray can be used, but softened butter adds a nice richness and helps with browning.
3 Cups Rhubarb, diced: The star ingredient, bringing its signature tart and refreshing flavor.
Why it matters: Rhubarb softens beautifully during baking, releasing its tangy juices that infuse the custard. Dicing ensures even distribution, allowing every bite of this Crustless Rhubarb Custard Pie to deliver its signature tartness.
Substitutions/Variations: Use fresh rhubarb, cleaned and trimmed. If using frozen rhubarb, there’s a note in the instructions (and FAQs) for adjusting bake time. You could mix with a small amount of diced strawberries for a sweeter pie.
1/3 Cup flour: Acts as a thickener and stabilizer for the custard.
Why it matters: In this Crustless Rhubarb Custard Pie, the flour is key to achieving a sliceable custard that holds its shape without a crust, preventing a watery or soupy result.
Substitutions/Variations: All-purpose flour is standard. For a naturally gluten-free version, use a 1:1 gluten-free baking flour blend for this specific pie. Cornstarch (about 1.5 tablespoons) can also be used, but may result in a slightly different texture for your custard.
3/4 Cup granulated sugar: Sweetens the pie, balancing rhubarb’s tartness.
Substitutions/Variations: While 3/4 cup provides optimal balance for most rhubarb, if your rhubarb is exceptionally tart, you might cautiously increase the sugar by 1-2 tablespoons. However, significant changes should be avoided, as altering the sugar ratio can subtly impact the delicate custard’s set and overall texture in this crustless form.
Why it matters: This specific amount of sugar is carefully calibrated to perfectly counteract the intense tartness of the fresh rhubarb, ensuring the custard in your Crustless Rhubarb Custard Pie is delightfully sweet but not cloying.
1/2 Tsp. Baking Powder: Provides a little lift to the custard, making it slightly airy.
Why it matters: Baking powder helps create a tender, light texture in the custard, ensuring your Crustless Rhubarb Custard Pie doesn’t become dense or rubbery.
Substitutions/Variations: Ensure it’s fresh for optimal leavening.
1/2 Tsp. salt: Enhances and balances all the flavors in the pie.
Why it matters: In a delicate balance of tart rhubarb and creamy custard like our Crustless Rhubarb Custard Pie, salt isn’t just for seasoning; it’s the critical element that sharpens the vibrant tang of the rhubarb and brightens the inherent sweetness of the custard, preventing the overall flavor from falling flat. It truly makes the key notes pop.
Substitutions/Variations: Use kosher salt or fine sea salt.
4 Large eggs: The primary binder and base for the custard.
Why it matters: Eggs are the structural backbone of this Crustless Rhubarb Custard Pie, creating its rich, creamy, and smooth texture as they set during baking, giving it the characteristic “custard” consistency.
Substitutions/Variations: Ensure eggs are at room temperature for better blending into a truly smooth custard.
1 Tbl. Vanilla Extract: Adds a classic warm, aromatic flavor.
Why it matters: Vanilla enhances the overall richness and sweetness of the custard, providing a comforting warmth that beautifully complements the unique tartness of the rhubarb in this Crustless Rhubarb Custard Pie.
Substitutions/Variations: Pure vanilla extract is recommended. Vanilla bean paste could add visible flecks and a more intense, gourmet flavor, elevating the simple custard.
1 Cup milk: Provides liquid and creaminess to the custard.
Why it matters: Milk forms the essential liquid base of the custard, contributing significantly to its smooth, luscious consistency, allowing the rhubarb to be suspended perfectly within the Crustless Rhubarb Custard Pie.
Substitutions/Variations: Whole milk is ideal for maximum richness and the silkiest custard texture, ensuring a truly decadent Crustless Rhubarb Custard Pie. While 2% or even skim milk can be used, be aware that their lower fat content may result in a slightly less creamy, and potentially firmer, custard. For a dairy-free version, use unsweetened plain non-dairy milk (like almond or soy milk), though final texture may vary slightly.
1 Tsp. butter, Softened, used to grease the pie plate: Prevents sticking and adds flavor.
Why it matters: Generously buttering the pie plate is paramount for this Crustless Rhubarb Custard Pie; it prevents the crustless pie from sticking to the pan and helps create a beautiful, golden-brown caramelized edge that tastes delicious.

Let’s Get Baking! Step-by-Step Instructions for Your Crustless Rhubarb Custard Pie
Unveil the magic of spring’s signature dessert! Transforming simple rhubarb into a creamy, golden Crustless Rhubarb Custard Pie is surprisingly effortless. Follow these meticulously detailed steps to achieve a perfectly set and divinely delicious result, making every slice a celebration of flavor and ease!
- Orchestrate Oven & Rhubarb Prep: Initiate the culinary dance by preheating your oven to precisely 375°F (190°C). This specific temperature is not just a number; it’s the carefully chosen heat that ensures the delicate custard in our Crustless Rhubarb Custard Pie achieves its perfect, creamy set, allowing the vibrant rhubarb to soften into tender pockets without any hint of scorching. As the oven begins to hum with warmth, embark on the meticulous task of preparing your rhubarb: meticulously clean each stalk, trim away any tough ends or fibrous strings, then dice them into uniform ½-inch to ¾-inch pieces, ensuring every rosy morsel is ready for its starring role.
- Pro Tip: Precision in dicing your rhubarb isn’t just for looks; it ensures each vibrant piece bakes evenly, contributing to a consistent texture and flavor burst throughout every bite of your pie.
- Butter the Basin & Lay the Foundation: Take your 9-inch pie plate and, with a lavish hand, very generously spread the softened butter across its entire bottom and meticulously up its sides. This generous, unwavering coating is paramount for our Crustless Rhubarb Custard Pie; it acts as a crucial release agent, ensuring your tender, crust-free dessert doesn’t stubbornly cling to the pan after baking, allowing for elegant, effortless serving. Then, artfully scatter the diced rhubarb evenly over the buttered surface, forming a single, inviting layer across the bottom of the plate.
- Pro Tip: Don’t just grease – butter it generously! This isn’t merely about non-stick; it actively encourages the edges of the custard to develop a beautiful, slightly caramelized golden crust where it meets the hot dish, adding a hidden layer of flavor.
- Craft the Silken Custard Blend: To achieve the signature, melt-in-your-mouth texture of this Crustless Rhubarb Custard Pie, it’s time for the magic of the blender. Into its carafe, introduce the precise measurements of 1/3 cup all-purpose flour, 3/4 cup granulated sugar, and 1/2 Tsp. baking powder. Follow these with the 1/2 Tsp. salt, 4 large eggs, 1 Tbl. vanilla extract, and 1 cup milk. Engage your high-powered blender, allowing it to whir for a full 1 to 2 minutes until the concoction transforms into an utterly smooth, homogeneous liquid, devoid of any discernible graininess. Pause to scrape down the sides as needed, ensuring every last ingredient is seamlessly integrated.
- Pro Tip: Blending to this level of perfect smoothness is the secret to a truly “crustless” texture – it eliminates any eggy or grainy consistency, ensuring your Crustless Rhubarb Custard Pie has that coveted, melt-in-your-mouth custard finish.
- Gracefully Immerse the Rhubarb: With a steady hand and careful precision, cascade the velvety-smooth custard mixture evenly over the vibrant, diced rhubarb already nestled like jewels in the prepared pie plate. The goal here is a gentle, thorough immersion, ensuring every piece of tart rhubarb is enveloped, ready to infuse its flavor into the setting custard of our Crustless Rhubarb Custard Pie. Don’t fret if a few rhubarb pieces gently float to the surface; this is expected and will ensure they are beautifully suspended within the final set custard.
- Pro Tip: To maintain the pristine rhubarb layer and prevent overflow, tilt the pie plate slightly as you pour, allowing the custard to gently cascade over the fruit rather than directly splashing onto it. This measured approach keeps your pie’s foundation intact.
- Bake to Golden Perfection: Tenderly place the pie plate into your preheated oven. Bake for precisely 40 minutes at 375°F (190°C). When it’s done, the center of your Crustless Rhubarb Custard Pie will exhibit a very slight, delicate jiggle when gently nudged, while the edges are gloriously set and kissed with a light golden hue. This subtle jiggle is the hallmark of a perfectly creamy, tender custard that will continue to firm up as it cools, achieving its ideal texture.
- Pro Tip: If you’re working with frozen rhubarb, extend the baking time by an additional 10 minutes (for a total of 50 minutes). The extra time compensates for the added chill and moisture, allowing the custard to set fully, and you’ll often notice a beautiful, proud puffing of the pie during this extended bake.
- The Patience of Cooling & The Joy of Serving: As soon as your Crustless Rhubarb Custard Pie emerges from the oven, resist the immediate urge to slice! Allow it to cool undisturbed on a wire rack for a crucial 10-15 minutes. This initial rest is vital; it permits the custard to gently finish setting and firm up, ensuring clean, elegant slices. Only then, carefully portion, and truly savor! It’s utterly delicious whether served warm or at room temperature, perhaps with a whisper of vanilla ice cream or a cloud of whipped cream.
- Pro Tip: For the absolute cleanest, most picture-perfect slices, consider chilling the pie in the refrigerator for an hour or two after it’s cooled to room temperature. This firming period will make cutting through the delicate custard a breeze.

Crustless Rhubarb Custard Pie: Your Easiest Spring Delight!
This Crustless Rhubarb Custard Pie is a simple, delicious dessert that highlights the tangy flavor of rhubarb in a smooth and creamy custard. Made without a crust, it’s easy to prepare and perfect for spring and summer gatherings.
- Prep Time: 10 minutes
- Cook Time: 40 minutes
- Total Time: 50 minutes
- Yield: 8 pieces or 1 9-inch pie 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 3 cups rhubarb, diced
- 1/3 cup all-purpose flour
- 3/4 cup granulated sugar
- 1/2 tsp baking powder
- 1/2 tsp salt
- 4 large eggs
- 1 tbsp vanilla extract
- 1 cup milk
- 1 tsp butter, softened (for greasing pie plate)
Instructions
- Preheat oven to 375°F (190°C). Clean and dice the rhubarb.
- Generously butter the bottom and sides of a 9-inch pie plate using the softened butter. Add the diced rhubarb evenly across the bottom.
- In a blender, combine flour, sugar, baking powder, salt, eggs, vanilla extract, and milk. Blend for 1–2 minutes until smooth.
- Pour the custard mixture over the rhubarb in the pie plate.
- Bake in the preheated oven for 40 minutes, or until the center is slightly jiggly. It will firm up after resting.
- Remove from the oven and let the pie sit for 10–15 minutes before serving.
Notes
- You can make this recipe using frozen rhubarb as well. Just bake for an additional 10 minutes.
- The custard will puff up beautifully as it bakes.
- Serve warm with a scoop of vanilla ice cream for an extra treat.
Nutrition
- Serving Size: 1 slice
- Calories: 161
- Sugar: 21g
- Sodium: 203mg
- Fat: 4g
- Saturated Fat: 1g
- Unsaturated Fat: 2.5g
- Trans Fat: 1g
- Carbohydrates: 27g
- Fiber: 1g
- Protein: 5g
- Cholesterol: 96mg
Assembly & Presentation: Making Your Crustless Rhubarb Custard Pie Shine
Even a rustic, crustless pie can be beautifully presented! Here’s how to ensure great assembly and a tempting presentation for your Crustless Rhubarb Custard Pie.
- Generous Greasing: Thoroughly buttering the pie plate is paramount to prevent sticking and create a golden, flavorful edge.
- Even Rhubarb Layer: Spread the diced rhubarb in an even layer across the bottom of the pie plate. This ensures a balanced distribution of fruit in every bite.
- Smooth Custard: Blending the custard ingredients completely is key to its silky texture.
- Don’t Overbake: A slightly jiggly center is ideal! Overbaking leads to a rubbery or cracked custard.
Plating Suggestions:
- Simple Slice: Serve individual slices on a plain dessert plate to highlight the vibrant pink rhubarb and creamy custard.
- Creamy Cloud Ascent: Elevate each slice of your warm Crustless Rhubarb Custard Pie with a generous, ethereal dollop of freshly whipped cream, or a melting scoop of premium vanilla bean ice cream. This classic accompaniment is more than just a garnish; its cool, silky texture and subtle sweetness exquisitely temper the rhubarb’s bright tang and the custard’s comforting richness, creating a truly harmonious bite.
- Fresh Garnish: A small sprig of fresh mint or a few extra tiny cubes of rhubarb (blanched or raw for color) can add a fresh touch.
- Dusting (Optional): A light dusting of powdered sugar over the top of the cooled pie adds a simple, elegant finish.

Storage & Make-Ahead Tips: Keeping Your Pie Perfect
Your Crustless Rhubarb Custard Pie is a delightful dessert that can be enjoyed for a few days.
Storage
- Refrigeration: Crustless Rhubarb Custard Pie should be refrigerated due to its dairy and egg-based custard filling. Once completely cooled to room temperature, cover the pie loosely with plastic wrap or foil. Store in the refrigerator for up to 3-4 days.
Make-Ahead Tips
- Prep Rhubarb: Dice the rhubarb ahead of time and store it in an airtight container in the refrigerator for up to 2-3 days.
- Mix Dry Ingredients: Whisk together the flour, sugar, baking powder, and salt in a bowl, cover, and store at room temperature.
- Cook Custard Base (partial): You could blend the eggs, vanilla, and milk ahead and store covered in the fridge for up to 1 day. Add dry ingredients and blend just before pouring over rhubarb.
Freezing (Not Recommended)
- Freezing Crustless Rhubarb Custard Pie is generally not recommended. The custard texture, due to its high egg and dairy content, can become watery, rubbery, or separate upon thawing. It’s best enjoyed fresh or from refrigeration within its storage window.
Pairing Suggestions:
Looking for the perfect accompaniment to your delightful Crustless Rhubarb Custard Pie? Consider these complementary treats that offer a delightful contrast or a healthy balance:
- For a Hearty & Healthy Breakfast: Pair a slice of this sweet-tart pie with the protein-packed goodness of Best-Ever Cottage Cheese Banana Muffins – Healthy & Easy or a stack of 3-Step Cottage Cheese Gluten-Free Pancakes | Best Recipe. The tang of the rhubarb pie offers a refreshing counterpoint to the richness of these breakfast favorites.
- For a Wholesome Snack: A smaller slice of Crustless Rhubarb Custard Pie pairs beautifully with a simple glass of milk or a cup of herbal tea.
- For a Light Meal: Serve your pie as the sweet finish to a light salad or a savory quiche.
Creative Twists: Explore More Custard Pie Adventures!
The classic Crustless Rhubarb Custard Pie is a simple delight, but its versatile nature makes it perfect for creative adaptations. Don’t be afraid to experiment with different fruit, citrus, or spice additions! Here are at least three creative twists to keep your baking adventures exciting.
- Lemon Rhubarb Ginger Custard Pie (Zesty & Spicy)
- Concept: Infuse the pie with bright lemon and a warm, spicy kick from ginger.
- How to do it:
- Lemon Boost: Add the zest of 1 lemon to the rhubarb in the pie plate. For the custard, increase lemon extract to 1.5 tablespoons or add the zest of another lemon to the blender.
- Ginger Zing: Add 1 teaspoon ground ginger to the dry ingredients (flour, sugar, etc.) in the blender. For extra pop, you could add ½ teaspoon finely minced fresh ginger to the rhubarb layer.
- Appeal: This twist offers a more complex flavor profile with its spicy warmth, perfect for a cozy dessert.
- Strawberry Rhubarb Coconut Custard Pie (Tropical & Sweet)
- Concept: A sweeter, more tropical version, combining strawberries and rhubarb with a hint of coconut.
- How to do it:
- Harmonious Fruit Blend: For a delightful shift in flavor, swap out 1 cup of the signature diced rhubarb, introducing 1 cup of perfectly diced fresh strawberries into the pie plate. This creates a beautifully balanced sweet-tart profile that softens the rhubarb’s intensity while adding a burst of sunny sweetness unique to this Crustless Rhubarb Custard Pie variation.
- Coconut Cream: Replace the 1 cup of milk with 1 cup of full-fat canned coconut milk (from a well-shaken can) for a subtle tropical flavor.
- Optional: Sprinkle a few tablespoons of unsweetened shredded coconut over the rhubarb before pouring the custard.
- Flavor Profile: This version offers a creamy, sweet, and exotically flavored twist, perfect for those who enjoy tropical notes.
- Cardamom Pear Custard Pie (Earthy & Aromatic)
- Concept: A fragrant and earthy custard pie that highlights the subtle sweetness of pears with aromatic cardamom.
- How to do it:
- Star Fruit Swap: For a truly distinct flavor experience, gracefully replace the signature rhubarb with 3 cups of meticulously diced firm pears, such as Bosc or Anjou varieties. These pears will soften to a tender, subtly sweet consistency, creating a beautifully earthy base for your Crustless Rhubarb Custard Pie variant. To maintain their pristine appearance until baking, you can lightly toss the diced pears with a teaspoon of lemon juice to prevent any premature browning.
- Spice: Add 1 teaspoon ground cardamom to the dry ingredients (flour, sugar, etc.) in the blender.
- Optional: A tiny pinch of ground nutmeg or allspice could complement the cardamom.
- Appeal: This twist offers a sophisticated and aromatic flavor profile, perfect for a refined dessert experience.
Your Crustless Pie Adventure Awaits!
There you have it: the delightful Crustless Rhubarb Custard Pie! This recipe proves that you don’t need a traditional crust to create a truly delicious and satisfying dessert. With its tender, tangy rhubarb and silky-smooth custard, it’s a guaranteed crowd-pleaser that delivers big on freshness and comfort.
So, gather your ingredients, fire up your oven, and prepare to enjoy a pie that’s both familiar and wonderfully simple. Whether you’re making it for a spring gathering, a weeknight treat, or just to celebrate the season, this Crustless Rhubarb Custard Pie is guaranteed to be a hit.
What’s your favorite way to enjoy fresh rhubarb? And what unique twist would you add to this fantastic custard pie? Share your thoughts and culinary successes in the comments below! Happy baking!
FAQs: Your Crustless Rhubarb Custard Pie Questions Answered!
Still have questions about perfecting your Crustless Rhubarb Custard Pie? We’ve got answers to help you bake your best pie yet!
What is the best thickener for rhubarb pie?
For Crustless Rhubarb Custard Pie, flour is an excellent thickener for the custard, as specified in this recipe. It helps the custard set to a firm, sliceable consistency and prevents it from being watery. Other common thickeners used in rhubarb pies include cornstarch (which results in a very clear, glossy filling), tapioca, or a combination of these. This recipe’s combination of flour and eggs provides a classic custard texture.
Should you refrigerate a rhubarb custard pie?
Yes, you should refrigerate a rhubarb custard pie, including this Crustless Rhubarb Custard Pie. Because it contains eggs and dairy, it’s considered a perishable item. Once it has cooled completely to room temperature (which can take a few hours), cover it loosely with plastic wrap or foil and store it in the refrigerator. It will stay fresh for 3-4 days.
Why is my rhubarb custard pie watery?
A watery Crustless Rhubarb Custard Pie can be caused by several factors:
Undercooking: The custard needs to reach a certain temperature to set. If the center is too jiggly, it simply needs more time.
Too much moisture from rhubarb: If using frozen rhubarb without adjusting bake time, or if fresh rhubarb is very watery, it can release excess liquid. This recipe accounts for frozen rhubarb by adding 10 minutes to bake time.
Improper ingredient ratio: Not enough flour or eggs (the thickeners) compared to the liquid.
Cutting too soon: The pie continues to set as it cools. Cutting into it while still warm can make it appear watery or unset.
What’s the difference between custard pie and cream pie?
The main difference between custard pie and cream pie lies in their filling and preparation:
Custard Pie (like Crustless Rhubarb Custard Pie): The filling is typically made from eggs, milk/cream, and sugar, and it’s baked in the oven. The eggs are crucial for setting the filling, creating a smooth, delicate, and often slightly jiggly texture similar to a baked custard.
Cream Pie: The filling is usually made on the stovetop, thickened with cornstarch or flour, and often contains milk/cream, sugar, and sometimes egg yolks (to enrich but not set through baking). It is then poured into a pre-baked pie crust and chilled to set. Cream pies often have a lighter, creamier, and sometimes more gelatinous texture compared to baked custards.
Can I make this pie using frozen rhubarb?
Yes, this Crustless Rhubarb Custard Pie recipe works great with frozen rhubarb! As noted in the instructions, if using frozen rhubarb, there’s no need to thaw it. Just add the frozen diced rhubarb directly to the pie plate. However, you will need to bake it for an additional 10 minutes (for a total of 50 minutes) because the frozen rhubarb introduces more coldness and moisture, requiring a bit more time for the center to cook and set completely. The pie will still puff up beautifully.