Blueberry dump cake should come out with a buttery topping and bubbling fruit underneath. Most don’t. Their topping bakes unevenly and the edges finish first. People usually leave it in the oven too long and the cake dries out. After several rounds of testing, the version below delivers the crisp, golden topping a dump cake is supposed to have.

A plate with a serving of blueberry cobbler, similar to Blueberry Dump Cake, topped with a golden crumbly crust, surrounded by fresh blueberries, a baking dish, and a striped napkin with forks on a white surface. — This recipe was first published in 2021, I updated it in May 2026 to adjust bake time and the cooking method to get a golden topping.

Ingredient Notes

Five baking ingredients on a counter—perfect for Blueberry Dump Cake: butter, two cans of blueberry pie filling, a carton of 3% milk, and Pillsbury Moist Supreme yellow cake mix—all set against a white tiled background.

Don’t use cake mix with pudding already added to it. It changes the texture of the topping and can make it heavier than intended.
You can substitute white cake mix for the yellow cake mix.

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Can you use fresh or frozen blueberries?

You can, buuuutttt I prefer with pie filling because it delivers predictable moisture and a stable structure underneath.

Fresh blueberries release juice less predictably as they bake, which can change how the topping sets over the fruit layer. If you still intend to use fresh blueberries, toss them with sugar and a little cornstarch first and icrease the bake time 5 to 10 minutes.

Frozen blueberries release more water as they thaw, and the color tends to bleed upward into the cake mix. The cake comes out blue-streaked rather than golden. That is more of a visual problem than a flavor problem, but the topping also stays softer than it should.

Blueberry dump cake with frozen blueberries runs into the opposite problem. Frozen berries carry more water than fresh, the filling thins out as they thaw in the oven, and the blueberry color bleeds upward into the cake mix.

Don’t Miss This Step

Pouring melted butter alone on top of your dump cake will leave some areas crisp while others stay dusty underneath.

Whisking milk into the butter fixes the issue so the cake mix topping bakes more evenly.

A glass measuring cup pours a yellow liquid mixture onto dry flour in a rectangular glass baking dish on a marble countertop, perfect for making Blueberry Dump Cake.

What The Recipe Should Look Like At Each Stage

1. Before baking: The blueberry pie filling sits on the bottom, the dry cake mix gets sprinkled over the top, and the butter and milk mixture gets poured across everything without stirring.

Some pooling of the butter and milk is normal. Do not stir the layers together. Dump cakes work because the filling and topping bake separately. Stirring is the single most common reason dump cake comes out gummy in the middle instead of soft underneath with a crisp topping.

A hand holding a spoon is stirring a glass baking dish filled with a yellow liquid mixture and sprinkled white flour on top, preparing a delicious Blueberry Dump Cake on a marble surface. — If you see large dry patches of cake mix sticking up through the liquid, lightly tap them down with the back of a spoon.

2. During baking: the edges bubble first while the center stays softer and paler longer. The top does not brown evenly from corner to corner, which is where many dump cakes get overbaked.

A glass baking dish filled with Blueberry Dump Cake showcases a golden brown crust on top and bubbling, dark fruit filling peeking around the edges. The dish is set on a white marble surface. — Look at the bubbling edges and the disappearance of dry powdery patches before worrying about whether the middle matches the corners.

3. After baking: let the pan rest for several minutes. The topping will firm up and the filling thickens noticeably.

A close-up of a freshly baked Blueberry Dump Cake in a glass baking dish, with a golden, crumbly topping and bubbling blueberry filling around the edges. Nearby are plates, forks, and a bowl of fresh blueberries. — When it’s done, the top should be lightly golden with bubbling edges and no large powdery patches of dry cake mix left behind.

I had my recipe tester, Angela, check bake times. At 40 minutes and the center still looked too soft. By 47 minutes, the structure and topping were where they needed to be. The recipe card now uses a 45 to 50 minute range.

A close-up of a glass baking dish filled with blueberry cobbler, also known as Blueberry Dump Cake. A spoon scoops out a portion, revealing juicy blueberries and thick purple filling beneath the golden, crumbly crust. Fresh blueberries are nearby. — The texture lands closer to a blueberry cobbler than a sliceable cake, which is exactly what this recipe is supposed to do.

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Blueberry Dump Cake

5 from 9 votes

Simple, tasty, and satisfying, this blueberry dump cake is a crowd-pleaser that combines canned blueberry pie filling with melted butter and yellow cake mix.

Prep Time 5

Cook Time 45

Total Time 1 25

Servings

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Ingredients

22 ounces blueberry pie filling (two 21-ounce cans)
15.25 ounces boxed yellow cake mix
1 cup unsalted butter, melted (2 sticks)
⅔ cup whole milk, room temperature

Instructions

Preheat the oven to 350°F. Spray a 9×13 baking dish with nonstick spray.
Spread the blueberry pie filling into the prepared baking dish.
Sprinkle the dry cake mix evenly over the pie filling. (You can use a fork to gently break up any large clumps of cake mix)
In a medium bowl, whisk together the melted butter and milk.
Pour the milk mixture slowly over the top of the dry cake mix. (See notes for tips)
Bake for 45 to 50 minutes, or until the top of the cake is golden brown.
Allow the cake to cool for about 30 minutes before serving.

Notes

To ensure there are no large areas of dry cake mix showing, use a spoon to gently push the dry cake mix under the butter mixture. (A few small spots of dry cake mix are ok.)

It’s very important that you do not stir the butter mixture and dry cake mix together, you are wanting to layer the cake ingredients. The magic of a dump cake happens while in the oven.

Nutrition

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