Name: 3-Ingredient Lemon Blueberry Dump Cake
Prep time: 10 min
Cook time: 50 min
Total time: 1 h
Cuisine: American
Ingredients: 2 and 1/4 cups fresh blueberries, divided (save 1/4 cup for the top); 3/4 cup butter, melted; 1 box (15.25 ounces) Lemon Cake Mix

Jump to Recipe

This delicious dessert is made with three simple ingredients consisting of fresh fruit, butter and a box of cake mix. Lemon Blueberry Dump Cake is great for after a family dinner, summer barbecues and it’s so quick and easy to make! Enjoy with a big scoop of vanilla ice cream!

Lemon blueberry dump cake in white bowl with spoon.

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If you love this blueberry dump cake, try this pumpkin dump cake and cherry dump cake next!

Why You’ll Love This Easy Dessert

Just 3 ingredients: Fresh blueberries, lemon cake mix and butter are all you need to make this easy dessert.
Only 10 minutes of prep: Simply layer everything in a 9×13 baking dish and let the oven do the rest.
Perfect for summer gatherings: The bright lemon and blueberry flavors make this an easy dessert for BBQs, potlucks, family dinners and summer parties.

Ingredients You’ll Need

2 and 1/4 cups fresh blueberries, divided (save 1/4 cup for the top)
3/4 cup butter, melted
1 box (15.25 ounces) Lemon Cake Mix

Substitutions and Variations

Substitute two cans of blueberry pie filling in place of the fresh blueberries. You can also use frozen blueberries. Simply add them to the recipe without thawing.
Spread two cans of lemon curd over top of the fresh blueberries before adding the dry cake mix.
You may substitute the lemon cake mix for white cake mix, vanilla cake mix or yellow cake mix.

Step By Step Instructions

Fresh blueberries in the bottom of a 9x13-inch baking dish.

Dry cake mix is sprinkled on top of blueberries in bottom of 9x13-inch baking dish that is filled with blueberries.

STEP ONE – Spray a 9×13-inch baking dish with non-stick spray, or grease lightly with butter.

STEP TWO – Preheat oven to 350°F.

STEP THREE – Add 2 cups blueberries to the prepared baking dish.

STEP FOUR – Sprinkle the dry cake mix over top of the blueberries. You do not need to add anything to the cake mix. Try and sprinkle it as evenly as possible, however perfection is not required!

Melted butter and blueberries are spread over top of the dry cake mix in 9x13-inch baking dish.

STEP FIVE – Next, melt the butter and drizzle melted butter evenly over top of the dry cake mix. Don’t worry if there are a few small dry patches of cake mix. They will disappear during the baking process. Do not stir the mixture!!

STEP SIX – Lastly, sprinkle the remaining 1/4 cup of blueberries on top .

Bueberry lemon dump cake in white bowl with container of milk in the background.

STEP EIGHT – Bake in 350°F preheat oven for 45 to 50 minutes. Top will be light golden brown and the blueberry filling might bubble up at the sides.

Serve blueberry dump cake plain or serve with with vanilla ice cream. A dollop of whipped cream or a sprinkle of powdered sugar is also delicious.

Storage Instructions

Store cooled leftover cake in a airtight container in the refrigerator for up to three days, or cover baking dish with plastic wrap.