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+ servings
stack of white plates with serving of blackberry dump cake on top of plate with scoop of vanilla ice cream on top
4.5 from 4 votes

Blackberry Dump Cake

Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 40 minutes
12 people
10 minute prep to make this easy blackberry dump cake recipe - summer blackberries baked with a cake and oat cobbler-like topping.


  • 4 cups blackberries fresh or frozen
  • 2/3 cup light brown sugar packed
  • 2 teaspoons vanilla extract
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon ground cardamom
  • 1 package yellow cake mix (just the dry cake mix)
  • 1/2 cup quick-cooking rolled oats
  • 1 cup salted butter melted


  • Preheat the oven to 350°F.
  • Combine blackberries, brown sugar, vanilla extract, cinnamon, and cardamom in 9"x13" baking dish.
  • Sprinkle cake mix and rolled oats over the blackberry mixture. Use your fingers or a spoon to lightly combine the cake mix and rolled oats.
  • Pour melted butter evenly over the top of the cake mix/oats.
  • Bake about 30-50 minutes until the blackberry filling is bubbling and topping is browned and baked through. ***See note below on cooking time.
  • Serve warm with ice cream or whipped cream.


***Wide range in cook time depends on if you are using fresh versus frozen blackberries - a dump cake made with frozen berries will take longer to cook all the way through.
Nutritional value information does not include ice cream or whipped cream added to the dump cake for serving.


Calories: 372kcal | Carbohydrates: 45g | Protein: 3g | Fat: 21g | Saturated Fat: 11g | Cholesterol: 41mg | Sodium: 436mg | Potassium: 229mg | Fiber: 4g | Sugar: 28g | Vitamin A: 575IU | Vitamin C: 10mg | Calcium: 86mg | Iron: 2mg

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