Blueberry Dump Cake

This easy blueberry dump cake is a foolproof dessert made with simple pantry ingredients in just 10 minutes. Juicy berries and a buttery cake mix topping create a jammy, golden treat perfect for family gatherings, potlucks, or a cozy weeknight indulgence.

5 from 1 vote

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Course: Dessert

Cuisine: American

Keyword: Blueberry Dump Cake, Blueberry dump cake 3 ingredients, Blueberry dump cake with frozen blueberries, Fresh blueberry dump cake, Old fashioned blueberry dump cake, Southern Living Blueberry dump cake, Vegan blueberry dump cake

Prep Time: 10

Cook Time: 45

Rest Time: 15

Total Time: 1 10

Servings:

Calories: 310kcal

Cost: $11

Equipment

9x13 inch baking dish (Lightly greased)
Measuring cups & spoons (For berries, sugar, cornstarch, etc.)
Butter knife (To cut cold butter into thin slices)
Spatula or spoon (To gently stir berry layer)
Optional zester (For lemon zest (if using))

Ingredients

4 cups blueberries - Fresh or frozen
⅓ cup granulated sugar - Adjust to taste based on berry sweetness
1 tablespoon lemon juice - Fresh-squeezed
1 tablespoon cornstarch - Helps create a jammy consistency
1 teaspoon vanilla extract - Optional, enhances berry flavor
1 box yellow cake mix - About 15.25 oz
½ cup unsalted butter - Cut into thin slices (can semi-melt if desired)
¼ cup chopped nuts - Optional, for topping

Instructions

Preheat oven to 350°F and grease a 9x13-inch baking dish.
Spread blueberries, sugar, lemon juice, and cornstarch; gently stir.
Sprinkle dry cake mix over berries and smooth lightly.
Place sliced or semi-melted butter evenly on top; add nuts if desired.
Bake for 45–50 minutes until golden and bubbling.
Let rest for 10–15 minutes and serve warm with desired toppings.

Notes

Nutrition information is automatically calculated and should be considered an approximation. Actual values may vary based on specific ingredients used and portion sizes.

Nutrition