4-Ingredient Berry Dump Cake

Berry dump cake is the easiest dessert you’ll make all year, just four ingredients, a baking dish, and a hot oven. It’s the kind of recipe that feels like a kitchen secret but never fails.

The butter melts into the dry cake mix, creating a crisp, golden crust over a bubbling layer of sweet mixed berries. It’s part cobbler, part crumble, and the whole thing comes together in about five minutes flat.

Why This Berry Dump Cake Works

The magic is in the method, or total lack of one. No mixing bowl, no whisk, not even a clean spoon until you’re ready to serve.

You get the crunch of a fruit crisp with zero stress. The butter seeps down and bakes the cake mix into a crumbly, toffee-like topping that’s impossible to mess up.

Ingredients

• 24 oz frozen mixed berries: use a blend of blueberries, raspberries, and blackberries; no need to thaw them
• 1/4 cup granulated sugar: sweetens the berries just enough
• 1 box (15.25 oz) yellow cake mix: the dry mix straight from the package, nothing else added
• 1/2 cup unsalted butter, cold: sliced into thin pats so it melts evenly

Variations / Substitutions

• Fresh berries: use 4 cups fresh mixed berries and reduce the sugar to 2 tablespoons
• Gluten-free: swap in a 1:1 gluten-free yellow cake mix
• Spices: add 1 teaspoon cinnamon or 1/4 teaspoon cardamom along with the sugar for a warmer flavor
• Dairy-free butter: a stick-style plant-based butter works fine; keep it cold and slice thinly
• Other fruit: frozen sliced peaches or cherries make excellent dump cakes with the same method

For a stone fruit version, try my Peach Dump Cake.

How to Make Easy Berry Dump Cake

Step 1: Spread the Berries

Preheat the oven to 350°F (175°C). Pour the 24 oz frozen mixed berries into a 9×13 inch baking dish. Sprinkle the 1/4 cup granulated sugar over them, toss gently, then spread the fruit into an even layer.

Step 2: Top with Cake Mix and Butter

Open the box of yellow cake mix and sprinkle the dry mix evenly over the berries, covering them completely. Cut the 1/2 cup cold butter into thin slices and arrange them in a single layer on top of the cake mix. Try to cover every bit of dry mix with a butter slice so no powdery spots remain. This is what gives you that golden, crackly crust.

Step 3: Bake and Spoon Into Bowls

Bake for 45 to 50 minutes, until the topping is deeply golden and the berry juices are bubbling up around the edges. Let the dish cool for about 10 minutes, then spoon the warm dump cake into bowls. Serve as is or with a scoop of vanilla ice cream.

Tips for the Best Berry Dump Cake

• Butter placement is everything.: Dry spots turn into powdery pockets if the butter doesn’t reach them. Slice the butter thin and distribute it so the whole surface gets some.
• No stirring allowed.: Dump cake works because the layers stay separate. Stirring turns it into a muddled batter instead of a crisp topping over fruit.
• Give it a short rest.: The juices thicken as they cool, so waiting 10 minutes keeps each spoonful from being a soupy mess.

Storing Leftovers

• Refrigerate: cover the dish once cool and store in the fridge for up to 4 days. The topping will soften a little but still tastes great.
• Reheating: warm individual portions in the microwave for 30 to 45 seconds, or reheat the whole dish in a 300°F (150°C) oven for about 15 minutes to recrisp the top.

Frequently Asked Questions

Why are there dry, powdery spots of cake mix on top?

Those spots happen when butter doesn’t reach some areas of the dry mix. Make sure you slice the butter thinly and cover the entire surface before baking.

Can I use a different cake mix flavor?

Yes, white cake mix, lemon cake mix, or even spice cake mix all work well. The texture stays the same, and the flavor pairs differently with the berries.

Can I double this recipe?

You can, but you’ll need a larger baking dish, about an 11×15 inch pan. Increase the bake time by 10 to 15 minutes and watch for that deep golden color and bubbling juice.

Berry Dump Cake Recipe

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Prep Time 5 minutes mins

Cook Time 45 minutes mins

Total Time 50 minutes mins

Servings: 8 servings

Calories: 360

Ingredients Method Notes

Ingredients

  

• 24 oz frozen mixed berries
• 1/4 cup granulated sugar
• 1 box (15.25 oz) yellow cake mix
• 1/2 cup unsalted butter, cold and sliced thin

Method

 

1. Spread the frozen berries and sugar in a 9×13 inch baking dish.
2. Sprinkle the dry cake mix evenly on top, then cover with thin slices of butter.
3. Bake at 350°F (175°C) for 45–50 minutes, until golden and bubbly. Cool 10 minutes and serve warm.

Notes

Use the berries straight from the freezer, no thawing needed. For a nutty crunch, scatter 1/2 cup chopped pecans over the cake mix before adding the butter.