Rhubarb Custard Pie – Old Fashioned & Absolutely Delicious

Rhubarb Custard Pie brings together a tangy fruit filling and a smooth, creamy base that feels like a true classic dessert. This Rhubarb Custard Pie recipe captures that nostalgic flavor with simple ingredients and a comforting texture. If you love traditional baking, this pie delivers a perfect balance of sweet and tart in every bite.

Story 

I first made Rhubarb Custard Pie using a handwritten recipe passed down from my great grandma, and it instantly became a staple in my kitchen. This Rhubarb Custard Pie reflects everything people love about a grandma style pie, from its rustic look to its rich, creamy filling. Every time I bake this old fashioned pie, the smell fills the house and brings back memories of family gatherings and simple desserts that never go out of style. Because this custard dessert uses fresh rhubarb and a smooth egg mixture, it creates a texture that feels both light and satisfying.

Ingredients

  • 1 (9-inch) pie crust, unbaked
  • 5 cups diced rhubarb (cut 1/4 inch thick)
  • 1 1/4 cups granulated sugar
  • 2 cold eggs
  • 5/8 cup cold whole milk (or 1/2 cup + 2 tablespoons)
  • 1/4 cup all-purpose flour
  • 1/8 teaspoon salt

Step-by-Step Instructions

Preparing the Ingredients

Preheat your oven to 375°F, then combine the diced rhubarb and sugar in a bowl and stir well so the fruit starts to release its juices, after that spread the mixture evenly into the unbaked pie crust.

Cooking Instructions

Whisk the eggs, milk, flour, and salt until smooth, then pour this custard mixture over the rhubarb in the crust and bake for 50–55 minutes until the filling sets and the top looks lightly golden, then remove the pie and let it cool completely for about 2 hours before slicing.

Tips for Perfect Results

Common Mistakes to Avoid

Do not skip cooling time because cutting the pie too early will cause the custard to fall apart, and avoid using overly thick rhubarb pieces since they will not cook evenly.

Pro Tips for Better Flavor

Use fresh rhubarb for the best tangy taste, and slightly adjust the sugar depending on how tart your rhubarb is to keep the flavor balanced and smooth.

Serving and Storage

How to Serve

Serve this pie chilled or at room temperature with whipped cream or a scoop of vanilla ice cream for a classic finish that highlights the creamy custard.

Rhubarb Custard Pie

How to Store Leftovers

Store leftovers covered in the refrigerator for up to three days, and for best results, enjoy slices cold or let them sit briefly at room temperature before serving again.

Conclusion

This Rhubarb Custard Pie offers a timeless combination of tangy fruit and creamy filling that fits any occasion, so once you try it, you will likely keep it in your regular baking rotation.

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Frequently Asked Questions

Can I use frozen rhubarb instead of fresh?

Yes, you can use frozen rhubarb, but make sure to thaw and drain it well so excess moisture does not affect the custard texture.

Why is my custard not setting properly?

The custard may stay soft if the pie is underbaked or not cooled long enough, so always bake until the center is set and allow full cooling time.

Can I make this pie ahead of time?

Yes, you can prepare this pie a day in advance since it stores well in the refrigerator and tastes even better once fully chilled.

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Rhubarb Custard Pie

Rhubarb Custard Pie


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  • Author: Olivia Hartwellen
  • Total Time: 3 hours 5 minutes
  • Yield: 8 slices 1x

Description

Old fashioned rhubarb custard pie with a tangy sweet filling and creamy texture, inspired by a traditional family recipe.


Ingredients

Scale
  • 1 (9-inch) pie crust, unbaked
  • 5 cups diced rhubarb (1/4 inch thick)
  • 1 1/4 cups granulated sugar
  • 2 eggs
  • 5/8 cup whole milk
  • 1/4 cup all-purpose flour
  • 1/8 teaspoon salt

Instructions

  1. Preheat oven to 375°F.
  2. Mix diced rhubarb with sugar until well combined.
  3. Spread the rhubarb mixture into the unbaked pie crust.
  4. Whisk together eggs, milk, flour, and salt until smooth.
  5. Pour the custard mixture over the rhubarb.
  6. Bake for 50–55 minutes until the filling is set.
  7. Remove from oven and cool completely before slicing.
  8. Serve with whipped cream or vanilla ice cream.

Notes

Adjust sugar by up to 1/4 cup depending on rhubarb tartness.

Cut rhubarb evenly for consistent cooking.

Allow full cooling time so the custard sets properly.

Store leftovers in the refrigerator for up to 3 days.

  • Prep Time: 15 minutes
  • Cook Time: 55 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 182
  • Sugar: 9 g
  • Sodium: 151 mg
  • Fat: 7 g
  • Saturated Fat: 3 g
  • Unsaturated Fat: 4 g
  • Trans Fat: 0 g
  • Carbohydrates: 25 g
  • Fiber: 2 g
  • Protein: 5 g
  • Cholesterol: 48 mg

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