Buttery Blueberry Dump Cake with Boxed Cake Mix
Blueberry dump cake is the ultimate fuss-free summer dessert. It comes together in under 10 minutes—just stir up a simple blueberry filling (no crust!), top with yellow cake mix, drizzle with melted butter, and bake. The result is warm, gooey, and absolutely irresistible with a scoop of ice cream or a generous dollop of whipped cream.
Servings: 8 servings
Calories: 454kcal
Video
Equipment
10 or 11-inch pie dish or round cake pan
Ingredients
- 2-2½ cups fresh blueberries
- ⅓ cup granulated sugar
- 1½ Tbsp cornstarch
- 1 medium lemon, zested and 1 Tbsp fresh lemon juice
- ¼ tsp ground cinnamon
- ¼ tsp Kosher salt
- 1 box yellow cake mix
- ¾ cup unsalted butter, melted
Instructions
- Preheat the oven to 350°F/175°C. Place a rack in the center of the oven.
- Make the filling. Combine fresh blueberries (enough to create an even layer on the base of the baking dish), ⅓ cup granulated sugar, 1½ Tbsp cornstarch, 1 tsp lemon zest, 1 Tbsp lemon juice, ¼ tsp cinnamon, and ¼ tsp Kosher salt in a pie dish, stirring to evenly coat the berries.
- Add the cake mix. Pour a box of yellow cake mix on top. Spread into an even layer.
- Add melted butter. Melt ¾ cup unsalted butter, then pour directly on top of the cake mix, trying to cover as much of the surface with butter as possible. Do not stir or mix.
- Bake the cake. Place the cake in a preheated oven and cook for 45-55 minutes, or until golden brown on top and the cake has puffed up.
- Cool, then serve. Allow the cake to cool slightly for 5 minutes, then serve immediately. I recommend serving with ice cream of fresh whipped cream!
Notes
- Notes: Homemade blueberry filling is best, but store-bought works. Fresh blueberries are ideal; frozen can be used straight from the freezer. Don’t skip the lemon juice or zest, and don’t stir—layer and bake.
- 9×13 pan: Follow the recipe as written and bake about 45 minutes. Use enough berries to fully cover the surface.
Nutrition
Calories: 454kcal | Carbohydrates: 70g | Protein: 3g | Fat: 19g | Saturated Fat: 12g | Trans Fat: 1g | Cholesterol: 46mg | Sodium: 546mg | Potassium: 83mg | Fiber: 2g | Sugar: 40g | Vitamin A: 555IU | Vitamin C: 11mg | Calcium: 148mg | Iron: 2mg
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