Introduction & Inspiration
When rhubarb season arrives each spring, I’m always looking for simple, delicious ways to showcase its unique tart flavor. This recipe for Crustless Rhubarb Custard Pie immediately caught my eye! It promises a comforting dessert featuring tender baked rhubarb suspended in a simple, sweet custard – all made incredibly easy with a blender and without the fuss of making a traditional pie crust.
My inspiration came from wanting a straightforward rhubarb dessert that really let the fruit shine. While pies and crisps are wonderful, sometimes a simple baked custard offers a different kind of comfort. The idea of blending the custard ingredients quickly and pouring it over the rhubarb seemed like the perfect low-effort approach for a high-reward treat.
My goal was to explore this specific recipe and share just how easy it is to create a satisfying, home-baked dessert celebrating rhubarb. It looked perfect for using up garden rhubarb, bringing to a spring potluck, or enjoying as a simple family dessert.
Let’s blend and bake this unique and easy rhubarb delight!
Nostalgic Appeal / Comfort Food Connection
This Crustless Rhubarb Custard Pie taps into the comforting nostalgia associated with both rhubarb desserts and simple baked custards. Rhubarb itself is a nostalgic flavor for many, often linked to springtime, grandmother’s gardens, and classic desserts like rhubarb pie, crisp, crumble, or stewed rhubarb. Its tartness is distinctive and memorable.
Baked custards – simple mixtures of eggs, milk, sugar, and often a thickener like flour – are also classic comfort food. They evoke feelings of simple, wholesome home baking and satisfyingly smooth, sweet treats. This recipe combines these two comforting elements beautifully.
The crustless nature and simple preparation method also hark back to rustic, unfussy desserts where the focus is purely on the flavor of the core ingredients. It feels both traditional and refreshingly simple.
Making and eating this dessert feels like enjoying a comforting taste of spring, blending familiar flavors and textures in an easy, satisfying way.
Homemade Focus (Blender Simplicity, Fresh Rhubarb)
This Crustless Rhubarb Custard Pie recipe is a fantastic example of simple homemade baking, focusing on fresh rhubarb and an incredibly easy blender method for the custard. While minimal in ingredients and steps, it results in a delicious, satisfying dessert made entirely from scratch (aside from basic pantry staples).
I absolutely love recipes that simplify techniques without sacrificing flavor. Using a blender to whip up the custard (flour, sugar, leavening, salt, eggs, vanilla, milk) takes mere seconds and ensures a smooth, well-combined mixture with minimal effort. This homemade custard base is key to the dessert’s texture.
The recipe highlights fresh rhubarb as the star. Cleaning and dicing the rhubarb is the main preparation step, allowing you to utilize seasonal produce. Generously buttering the pie plate is another simple homemade touch crucial for flavor and preventing sticking.
From prepping the rhubarb to blending the custard and baking until just set, the process emphasizes easy homemade techniques and lets the simple, quality ingredients shine through.
Flavor Goal
The primary flavor goal of this Crustless Rhubarb Custard Pie is a delightful balance between the distinct tartness of baked rhubarb and the simple sweetness of a smooth, tender custard. It aims for a comforting, rustic dessert where the rhubarb flavor is prominent but mellowed by the sweet custard.
The diced rhubarb, baked in the custard, becomes soft and tender, releasing its signature tart, fruity flavor.
The custard, made with eggs, milk, sugar, vanilla, and thickened slightly with flour, sets around the rhubarb, providing a sweet, creamy, vanilla-scented counterpoint. The baking powder/soda likely provides a slight lift, preventing it from being overly dense.
The butter greasing the pan adds a subtle richness to the edges. The overall effect is a simple, comforting dessert highlighting the unique sweet-tart flavor of rhubarb in a smooth custard base.
Ingredient Insights
Let’s explore the roles of these simple ingredients:
- Rhubarb: The star fruit (technically a vegetable!). Provides the essential tart flavor and texture. Choose firm, brightly colored stalks. Trim leaves (they are toxic) and tough ends. Fresh is best, but frozen (thawed and drained) could work, potentially releasing more liquid.
- Butter, softened: Used to generously grease the pie plate, preventing sticking and adding flavor.
- All-purpose flour: Acts as a thickener for the custard, helping it set.
- Granulated sugar: Sweetens the custard to balance the tart rhubarb.
- Baking powder & Baking soda: Provide a small amount of leavening for the custard, making it slightly lighter than a dense flan. The recipe lists both; often only baking powder is used in custards, but the soda might react slightly with rhubarb’s acidity.
- Salt: Balances sweetness and enhances overall flavor.
- Large eggs: Provide richness and are the primary setting agent for the custard.
- Vanilla extract: Adds classic warm flavor to the custard.
- Milk: Provides the liquid base for the custard. Whole milk adds richness.
Simple pantry staples combine with fresh rhubarb.
Essential Equipment
This recipe requires very basic kitchen tools:
- A Pie Plate: Standard 9-inch size is implied. Glass or ceramic works well.
- Butter: For greasing the pie plate thoroughly.
- A Blender: Essential for quickly and smoothly combining the custard ingredients. A food processor could also work.
- A cutting board and knife: For cleaning and dicing the rhubarb.
- Measuring cups and spoons.
- A spatula: Helpful for scraping the blender.
Minimal equipment for an incredibly easy dessert!
List of Ingredients with Measurements
Here’s the complete list of ingredients, consolidated and with precise measurements:
- 3 Cups Rhubarb, cleaned and diced (about 1 lb)
- 1 Tsp. butter, softened (for greasing pan – use generously!)
- 1/3 Cup all-purpose flour
- 3/4 Cup granulated sugar
- 1/2 Tsp. Baking Powder
- 1/2 Tsp. Baking soda (Note: confirm if both are needed, or typo)
- 1/2 Tsp. salt
- 4 Large eggs
- 1 Tbl. Vanilla Extract
- 1 Cup milk
These simple quantities create one lovely crustless pie.
Dice rhubarb into roughly uniform pieces (e.g., 1/2-inch).

Step-by-Step Instructions (Easy Blender Method!)
Let’s bake this simple rhubarb custard:
1. Preheat Oven and Prepare Pan:
- Preheat oven to 375°F (190°C).
- Take the softened butter (about 1 Tsp or more) and very generously spread it all over the bottom and up the sides of a 9-inch pie plate. Good greasing is crucial for a crustless pie.
2. Add Rhubarb:
- Place the cleaned and diced rhubarb pieces into the buttered pie plate, spreading them out relatively evenly.
3. Blend the Custard:
- In a blender, combine the remaining ingredients: all-purpose flour, granulated sugar, baking powder, baking soda, salt, eggs, vanilla extract, and milk.
- Secure the lid and blend for 1 to 2 minutes, or until the mixture is completely smooth and well combined. Scrape down the sides if necessary.
4. Pour Custard Over Rhubarb:
- Pour the blended custard mixture evenly over the diced rhubarb in the pie plate.
5. Bake:
- Carefully place the pie plate in the preheated oven.
- Bake for 40 minutes at 375°F (190°C). The custard is done when the edges are set and slightly puffed, and the center is still ever so slightly jiggly when gently nudged. Do not overbake.
6. Rest and Serve:
- Remove the pie from the oven and place it on a wire rack. Let the custard pie sit and cool for at least 10-15 minutes before slicing. The center will finish setting and firm up as it cools.
- Serve warm or at room temperature.
An incredibly easy way to enjoy baked rhubarb!

Troubleshooting
Custards and crustless pies have a few potential pitfalls:
- Problem: Custard didn’t set / is too runny.
- Solution: Underbaking is the most likely cause. Ensure the center was only slightly jiggly, not completely liquid. Bake a few minutes longer if needed. Ensure accurate egg/flour measurements. Very watery rhubarb (if using previously frozen and not drained) could add excess liquid.
- Problem: Custard seems slightly rubbery or curdled.
- Solution: Overbaking or oven temperature too high. Bake just until the center is barely set. Check oven temp accuracy.
- Problem: Sticking badly to the pie plate.
- Solution: The pie plate must be very generously buttered, getting into all corners. Letting it cool slightly before attempting to serve also helps.
- Problem: Rhubarb released too much liquid, making bottom soggy.
- Solution: Some liquid release is normal. If excessive, try tossing the diced rhubarb with 1-2 tablespoons of the measured flour before placing it in the pan; this can help absorb some juice. Ensure rhubarb wasn’t waterlogged from washing.
Trust the “slightly jiggly” center cue for doneness!
Tips and Variations
Let’s customize this simple rhubarb bake:
- Tip: Use fresh, firm rhubarb stalks for the best flavor and texture. If using frozen, thaw completely and drain very well, patting dry, before dicing.
- Variation: Add the zest of 1 orange or lemon to the blender along with the other custard ingredients for a citrusy note that complements rhubarb beautifully.
- Tip: For extra flavor, sprinkle a little cinnamon or nutmeg over the rhubarb in the pan before pouring the custard over.
- Variation: Swap some of the rhubarb with sliced strawberries (about 1 cup) for a classic Strawberry Rhubarb combination. Add strawberries with the rhubarb.
- Tip: Ensure eggs are fully blended into the custard mixture for even setting.
- Variation: Use brown sugar instead of granulated sugar for a deeper, more molasses-like flavor.
- Variation: Serve with a dollop of sweetened whipped cream, vanilla ice cream, or a drizzle of heavy cream.
A versatile base for spring fruit flavors!
Serving and Pairing Suggestions
This Crustless Rhubarb Custard Pie is a lovely, simple dessert.
Serving: Serve warm or at room temperature, sliced into wedges directly from the pie plate.
Pairing:
- Toppings: Delicious on its own, but even better with a dollop of fresh whipped cream, vanilla bean ice cream, or crème fraîche to balance the tartness.
- Occasions: Perfect for spring gatherings, Easter brunch, simple family dinners, or anytime you have fresh rhubarb.
- Beverages: Pairs nicely with coffee, tea, or a glass of milk. A dessert wine like a late-harvest Riesling could also work. Drink with moderation.
It’s a comforting and satisfying way to enjoy rhubarb.
Nutritional Information
This dessert features fruit and a simple custard. Nutritional info is approximate (per slice, assuming 8 slices):
- Calories: 200-280
- Fat: 8-12 grams
- Saturated Fat: 4-7 grams (from butter, eggs, milk)
- Cholesterol: 90-130+ mg (high due to 4 eggs)
- Sodium: 150-250+ mg (from salt and leavening)
- Total Carbs.: 25-35 grams
- Dietary Fiber: 1-3 grams (from rhubarb)
- Sugars: 18-28 grams (from sugar and naturally in milk/rhubarb)
- Protein: 5-7 grams
Provides fiber and vitamins from rhubarb, and protein/calcium from eggs/milk. Sugar content is significant, typical of dessert. Cholesterol is notable due to the egg-rich custard.
PrintCrustless Rhubarb Custard Pie
Make this easy Crustless Rhubarb Custard Pie! Uses a simple blender custard poured over fresh rhubarb and baked until set.
Ingredients
Here’s the complete list of ingredients, consolidated and with precise measurements:
- 3 Cups Rhubarb, cleaned and diced (about 1 lb)
- 1 Tsp. butter, softened (for greasing pan – use generously!)
- 1/3 Cup all-purpose flour
- 3/4 Cup granulated sugar
- 1/2 Tsp. Baking Powder
- 1/2 Tsp. Baking soda (Note: confirm if both are needed, or typo)
- 1/2 Tsp. salt
- 4 Large eggs
- 1 Tbl. Vanilla Extract
- 1 Cup milk
These simple quantities create one lovely crustless pie.
Dice rhubarb into roughly uniform pieces (e.g., 1/2-inch).
Instructions
Let’s bake this simple rhubarb custard:
1. Preheat Oven and Prepare Pan:
- Preheat oven to 375°F (190°C).
- Take the softened butter (about 1 Tsp or more) and very generously spread it all over the bottom and up the sides of a 9-inch pie plate. Good greasing is crucial for a crustless pie.
2. Add Rhubarb:
- Place the cleaned and diced rhubarb pieces into the buttered pie plate, spreading them out relatively evenly.
3. Blend the Custard:
- In a blender, combine the remaining ingredients: all-purpose flour, granulated sugar, baking powder, baking soda, salt, eggs, vanilla extract, and milk.
- Secure the lid and blend for 1 to 2 minutes, or until the mixture is completely smooth and well combined. Scrape down the sides if necessary.
4. Pour Custard Over Rhubarb:
- Pour the blended custard mixture evenly over the diced rhubarb in the pie plate.
5. Bake:
- Carefully place the pie plate in the preheated oven.
- Bake for 40 minutes at 375°F (190°C). The custard is done when the edges are set and slightly puffed, and the center is still ever so slightly jiggly when gently nudged. Do not overbake.
6. Rest and Serve:
- Remove the pie from the oven and place it on a wire rack. Let the custard pie sit and cool for at least 10-15 minutes before slicing. The center will finish setting and firm up as it cools.
- Serve warm or at room temperature.
An incredibly easy way to enjoy baked rhubarb
Recipe Summary and Q&A
Let’s conclude with a summary and common questions:
Recipe Summary:
Crustless Rhubarb Custard Pie is an easy dessert featuring diced fresh rhubarb placed in a buttered pie plate and covered with a simple custard batter (made with flour, sugar, eggs, milk, vanilla, and leavenings) mixed quickly in a blender. It’s baked until the custard is just set with a slightly jiggly center, then rested briefly before serving warm or at room temperature.
Q&A:
Q: Can I make this ahead of time? A: Yes, it can be made a day ahead and stored, covered, in the refrigerator. It’s delicious served cold or allowed to come to room temperature. Reheating gently in a low oven is also possible.
Q: How do I store leftovers? A: Store leftover pie covered in the refrigerator for up to 3-4 days.
Q: Can I freeze this? A: Baked custards can sometimes become watery upon thawing, so freezing isn’t ideal for the best texture, though it is possible. Freeze well-wrapped and thaw in the refrigerator.
Q: Can I make this gluten-free? A: Yes, easily. Substitute the 1/3 cup all-purpose flour with a measure-for-measure gluten-free baking blend or potentially cornstarch (might need slightly less cornstarch, maybe 2-3 tbsp).
Q: My rhubarb is very tart. Should I add more sugar? A: You can slightly increase the sugar in the custard if your rhubarb is exceptionally tart, or simply serve the finished pie with a sweeter topping like sweetened whipped cream or ice cream to balance it.
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