3 Ingredient Blueberry Dump Cake

This 3 Ingredient Blueberry Dump Cake is a moist lemon cake filled with delicious blueberries and warm drizzled butter. No mixing, no preparing… just layering, baking, then devouring! This will be, hands-down, the easiest AND most delicious cake you’ve had yet!

If you’re looking for the perfect dessert to bring to a party or fun gathering, this is it! This delicious dump cake will feed 12-15 people easily and it is seriously so good. The combination of the yellow lemon cake with the creamy butter and sweet blueberries make it completely irresistible!

What is a ‘dump cake’?

A dump cake gets its name because you literally just dump all the ingredients together. There is typically no mixing and stirring. You just dump, bake, and eat! It doesn’t get much easier than that!

How long will a dump cake last unrefrigerated?

A dump cake can last out on the counter for 4-5 days if following these key details: The cake needs to be sealed tightly and the temperature inside should maintain a temperature around 72 F. It can also be stored tightly wrapped in the fridge as well.

Ingredients for our 3 Ingredient Blueberry Dump Cake:

  • Frozen Blueberries
  • Perfectly Moist Lemon Supreme Cake Mix
  • Butter

How to make our 3 Ingredient Blueberry Dump Cake:

First, preheat the oven to 350 F. Next, grease a 9×13 casserole dish. It doesn’t have to be too deep as the cake wont rise much over 1-2 inches high. Once greased, pour 2 cups of FROZEN blueberries into the dish. Make sure they are spread out evenly.

Next, sprinkle the lemon cake mix over the blueberries. Try to make it as even of layer as you can.

Melt the stick of butter completely. Pour it over the cake mix. Use a fork to manipulate the butter if needed for even distribution. Last, pour the remaining 1 cup of frozen blueberries over top and lightly press into place.

Bake for 45 minutes. Allow the cake to cool for 5-10 minutes. Serve warm or refrigerate and serve cold!

You’re going to LOVE this super delicious and easy cake recipe. Everyone will be asking for the recipe, trust me! The best part is that it takes less than 5 minutes to throw together. So make the most of every minute you have this week and give this recipe a try!

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3 Ingredient Blueberry Dump Cake
Yield: 12-15 Servings

3 Ingredient Blueberry Dump Cake

Prep Time: 5 minutes
Cook Time: 45 minutes
Total Time: 50 minutes

This 3 Ingredient Blueberry Dump Cake is a moist lemon cake filled with delicious blueberries and warm drizzled butter.


  • 3 C frozen blueberries
  • 1 Box of lemon cake mix, (15.25oz)
  • 1 1/4 Sticks butter, melted


    1. Preheat oven to 350 F.
    2. Spray a 9x13 pan with non-stick spray.
    3. Spread 2 cups of frozen blueberries along the base of the dish.
    4. Sprinkle the entire contents of the dry cake mix evenly over the blueberries.
    5. Melt the butter and drizzle it evenly over the dry cake mix.
    6. Add 1 cup of frozen blueberries on top of the cake.
    7. Bake for 45-48 minutes or until a golden yellow. Serve warm or cold!

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 214Total Fat: 9gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 20mgSodium: 315mgCarbohydrates: 32gFiber: 1gSugar: 18gProtein: 2g

(Nutritional information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)

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