Dessert

Golden Blackberry Rhubarb Pie Recipe

ByHarper Ellington April 7, 2026April 7, 2026

Introduction

Golden Blackberry Rhubarb Pie is a delightful blend of tart rhubarb and sweet blackberries crowned with a crunchy walnut crumble. This dessert strikes the perfect balance between sweet and tangy, making it an irresistible treat for any occasion. Plus, it’s surprisingly easy to make, even if you’re not a baking expert.

A slice of berry crumble pie sits on a white plate, with three main layers visible. The bottom layer is a deep red-purple berry filling, glossy and slightly runny, with visible whole blackberries and other mixed berries. Above that is a golden brown crumbly topping made of small clusters of crumb mix, adding a rough texture. On top of the crumble sits a large, smooth scoop of white vanilla ice cream, slightly melting at the edges. The whole plate rests on a beige cloth with a white marbled background. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

1 pie crust (store-bought or homemade)
8 rhubarb stalks, cut into 1/2-inch thick slices
16 oz blackberries
1 cup sugar
2 tbsp cornstarch
1/2 teaspoon vanilla extract
1/2 cup butter (cold and unsalted)
1/2 cup sugar (for topping)
1 cup all-purpose flour
1/2 cup walnuts, coarsely chopped
1/4 teaspoon ground cinnamon

Instructions

Step 1: Preheat your oven to 350°F. While it heats, prepare your ingredients by cutting the rhubarb into 1/2-inch slices, coarsely chopping the walnuts, and measuring out all dry ingredients. This helps keep the process smooth and efficient.
Step 2: In a bowl, combine the cold butter, 1/2 cup sugar, flour, chopped walnuts, and cinnamon. Use a fork or your fingertips to mix until you get a coarse crumbly texture with pea-sized pieces. Set aside the crumble topping.
Step 3: In a separate bowl, toss the sliced rhubarb, blackberries, 1 cup sugar, cornstarch, and vanilla extract until the fruit is evenly coated. Let this mixture sit for 1-2 minutes to allow the flavors to meld and prevent a watery filling.
Step 4: Place the pie crust in a 9-inch pie dish. Pour the fruit filling evenly into the crust. Spread the walnut crumble topping over the filling, pressing down gently but keeping it loose so the topping stays crisp. Leave small gaps for steam to escape during baking.
Step 5: Bake the pie for 50-60 minutes until the crumble is golden brown and the fruit filling bubbles around the edges. If the topping browns too quickly, tent the pie with foil for the last 20 minutes.
Step 6: Remove from the oven and let cool on a wire rack for 20-30 minutes to allow the filling to set. Serve warm or at room temperature, optionally with vanilla ice cream or whipped cream.

Tips & Variations

Use fresh rhubarb for the best flavor, or thaw and drain frozen rhubarb if fresh is unavailable.
Substitute blackberries with raspberries, blueberries, or strawberries, keeping the total fruit amount the same.
If you prefer a nut-free crumble, simply omit the walnuts or replace them with pecans or almonds.
Try using cold coconut oil instead of butter in the topping for a dairy-free option.
Blind bake the pie crust for 10 minutes before adding filling to avoid a soggy bottom.

Storage

Once cooled completely, cover the pie loosely with foil or plastic wrap. Store at room temperature for up to 2 days, or in the refrigerator for 4-5 days. To freeze, wrap tightly in plastic wrap and foil, and freeze for up to 3 months, baked or unbaked. Thaw frozen pie overnight in the fridge and warm in a 350°F oven for 15-20 minutes if desired.

How to Serve

A single slice of berry crumble pie sits on a white plate, showing three clear layers: the bottom layer is a thick, juicy mix of dark purple and red berries with a glossy, syrupy texture; the middle layer is a golden-brown crumb topping with a crunchy, rough look; and the top layer is a smooth, perfectly round scoop of creamy vanilla ice cream that slightly melts over the crumble. The pie filling is slightly spilling over the edge of the plate, and the white marbled background with blurred rhubarb stalks adds a fresh, clean feel. The cloth napkin next to the plate is beige with a soft texture. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen berries instead of fresh?

Yes, frozen berries work well. Make sure to thaw and drain them thoroughly to reduce excess liquid before mixing with the other filling ingredients.

How do I prevent a soggy pie crust?

Blind bake your crust for 10 minutes before filling it, and keep the crumble topping cold before baking. Allow steam to escape by leaving gaps in the topping, and tent the pie with foil if the topping browns too quickly.