Blueberry Dump Cake: 3-Ingredient Dessert
This blueberry dump cake relies on the interaction between melted butter and dry cake mix to create a soft crust. You must pour the butter evenly over the mix without stirring to ensure the topping bakes into a golden brown layer. Let the cake rest for 5 minutes after removing it from the 350°F (175°C) oven. This pause allows the fruit juices to set so the dessert maintains its structure when served warm.
Blueberry Dump Cake: 3-Ingredient Dessert
Recipe cardIngredients
Instructions
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Prepare the oven
Preheat your oven to 350°F (175°C). Lightly grease a 9-inch (22.8 cm) square baking dish. Greasing prevents the fruit sugars from sticking to the sides.
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Layer the fruit
Spread the blueberries evenly across the bottom of the dish. Sprinkle the optional sugar, lemon zest, and cinnamon over the berries. This adds a bright contrast to the sweet berries.
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Add cake mix
Dump the dry cake mix over the berries. Do not stir the ingredients together. Keeping the mix on top ensures a distinct crust forms during baking.
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Apply melted butter
Pour the melted butter over the cake mix. Ensure the butter covers the surface so it can soak through the flour. This fat hydrates the mix to create a crisp topping.
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Bake the cake
Bake for 30-35 minutes. Look for a golden brown topping and bubbly berries. The bubbles indicate the fruit has reached the correct temperature.
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Rest and serve
Let the cake rest for 5 minutes. Resting allows the juices to thicken slightly so the slices hold their shape. Serve while warm.
Watch the topping closely during the final minutes. If the crust browns too quickly before the berries bubble, tent the dish loosely with aluminum foil for the last 10 minutes. This protects the surface from burning while the heat continues to cook the fruit center.
What to serve with it
Serve this cake warm with a scoop of vanilla ice cream for a classic contrast. You can also add a dollop of light whipped cream and chopped nuts for texture. For a bright finish, garnish the dish with fresh mint leaves and a drizzle of honey before placing it on the table.
Storing and reheating
Cool the cake completely at room temperature before covering it with plastic wrap or foil for up to 2 days. For longer storage, wrap it tightly in aluminum foil and freeze for 1 month. Thaw overnight in the refrigerator and reheat in a 350°F (175°C) oven for 10 minutes.
Getting the texture right
Do not stir the cake mix into the berries. Keep the dry mix on top so the melted butter can soak through it during baking. If the topping browns too quickly, tent the dish loosely with aluminum foil for the last 10 minutes to protect the crust from burning.
Making it ahead
You can prepare the fruit layer in the baking dish before you are ready to bake. Keep the dry cake mix and melted butter separate until you are ready to assemble. This prevents the cake mix from absorbing moisture from the berries, which ensures the topping stays crisp.
Nutrition per serving
- Calories
- 480
- Protein
- 5.2 g
- Carbs
- 58.4 g
- Fat
- 22.1 g
- Fiber
- 3.8 g
- Sugar
- 41.2 g
Estimated, and offered as a guide rather than a medical figure.
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Questions people ask
What is the biggest mistake to avoid when making a dump cake?
Do not stir the ingredients together. You must leave the cake mix in a solid layer on top of the fruit so the butter can create a crust. Stirring the mix into the berries results in a soggy, pudding-like consistency instead of a cake.
What are the ingredients for a 3-ingredient blueberry dump cake?
You need 4 cups of blueberries, one 15-oz box of yellow cake mix, and 1/2 cup of melted unsalted butter. These three components provide the fruit base, the structure, and the fat needed to brown the topping in the oven.
Can I make blueberry dump cake using canned pie filling?
Yes, you can use one 21-oz can of blueberry pie filling. Stir the filling lightly before adding the cake mix. This version provides a consistent sweetness and thickness, though you may need to adjust the baking time based on the filling moisture.
About the author
Bethany Wilfred
Bethany Wilfred loves creating comforting weeknight meals and seasonal desserts that feel both familiar and fresh. She shares clear, step-by-step recipes featuring pantry staples and fresh produce, so readers can quickly bring tasty, home-cooked dishes to their tables.
