These berry crumble bars are made with a buttery shortbread dough that’s used for both the crust and the crumble. In between is a creamy custard-like filling dotted with fresh blackberries and raspberries forming bars that are firm enough to eat with your fingers.

sliced fruit crumble bars on a black plate.

Bring Out the Berries!

These Mixed Berry Crumble Bars are the perfect easy treat for spring and summer. It’s a simple recipe with minimal prep but big results. Each bite has sweet fresh berries surrounded by a firm custard like filling.

The filling is kind of like a custard mixture but a little thicker. Not as dense as a blondie but thicker than a homemade lemon bar. The filling sets as it bakes, with the berries dotted throughout. I used blackberries and raspberries, but you could swap these out with other berries.

sliced fruit crumble bars on a pink plate.

This recipe begins with a basic shortbread crust made with lots of butter. Part is pressed into a pan and baked until set before adding the filling.

The final step is the crumble topping, which is some of the remaining crust that’s sprinkled on top for a buttery, crumbly finish. This method is perfect because you don’t need extra ingredients to make a crumble topping.

Once the bars come out of the oven and have cooled, you can cut them into bars. They’re easier than a pie and are perfect for bringing to parties and potlucks. If you’re making a dessert tray, try pairing these with some double chocolate chunk cookies. The chocolate is a nice contrast to the creamy fruit bars.

A Berry Good Dessert You Won’t Want to Miss

Customizable: Mix and match different berries depending on what you have.
Easy: You only need a few basic ingredients to make these bars, so it’s great for last-minute occasions.
Fruity and creamy: Fresh berries add a pop of fresh flavor, while the custard filling adds a creamy richness.

2 Key Buildings Blocks to Irresistible Fruit Crumble Bars

These are the two key ingredients you’ll need for this recipe, but don’t forget to check the recipe card for the rest.

Sour cream: Adds a tangy richness to the filling.
Blackberries and raspberries: Feel free to swap with other types of berries, like blueberries or strawberries, for a different flavor. Fresh is best for this recipe.

Make These Dessert Bars in 4 Easy Steps

Step One: Prepare the Crust

fruit crumble bar topping ingredients in a glass measuring cup. — Stir together the flour, sugar, and salt. Cut in butter.

fruit crumble bar topping in a glass bowl. — Mix until the mixture becomes crumbly.

fruit crumble bar topping pressed into a baking pan. — Press the mixture into the pan and bake.

Step Two: Make the Filling

fruit crumble bar filling ingredients in a glass measuring cup with a whisk. — Add sugar, flour, salt, eggs, and sour cream to a bowl.

fruit crumble bar filling without the berries in a glass measuring cup with a whisk. — Whisk until smooth.

fruit crumble bar filling in a glass measuring cup with a spatula. — Fold in the berries.

unbaked fruit crumble bars without the topping in a baking pan. — Spread the mixture over the baked crust.

Step Three: Add the Topping

unbaked fruit crumble bars in a baking pan. — Sprinkle the remaining dough over the top of the berry filling, making sure it covers the fruit evenly.

Step Four: Bake and Cool

fruit crumble bars uncut in a baking pan. — Bake in the oven until the top is golden brown.

sliced fruit crumble bars on a baking sheet. — Let the bars cool on a wire rack before cutting into squares for serving.

These Berry Crumb Bars Won’t Last Long

To store these fruit pie bars, keep them in an airtight container at room temperature for up to two days. If you’d like to keep them longer, refrigerate for up to five days. You can also freeze them for two to three months.

Don’t Forget!

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