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Easy Zesty Lemon Blueberry Dump Cake Recipe with 3 Simple Ingredients

lemon blueberry dump cake - featured image

A quick and easy dump cake featuring lemon cake mix, blueberries, and butter, delivering a moist, zesty, and flavorful dessert with minimal effort.

Ingredients

Scale
  • 1 box lemon cake mix (about 15.25 oz / 432 g)
  • 4 cups fresh or frozen blueberries (about 600 g)
  • 1 cup (2 sticks) unsalted butter (227 g), melted

Instructions

  1. Preheat your oven to 350°F (175°C).
  2. If using fresh blueberries, rinse and drain them well. If frozen, no prep needed—sprinkle them frozen. Set aside about 4 cups (600 g).
  3. Generously grease your 9×13-inch baking dish with butter or non-stick spray.
  4. Sprinkle the dry lemon cake mix evenly across the bottom of the prepared pan without stirring or mixing.
  5. Evenly distribute the blueberries over the cake mix. Optionally, sprinkle 1 tablespoon of lemon zest on top for extra zing.
  6. Melt 1 cup (2 sticks, 227 g) of unsalted butter, preferably in 30-second bursts in the microwave, stirring to avoid burning.
  7. Pour the melted butter slowly and evenly over the blueberries and cake mix.
  8. Bake in the preheated oven for 45 to 50 minutes until the top is golden brown and bubbling around the edges, and the center feels set but moist.
  9. Let cool for at least 10 minutes before serving to allow the juices to thicken.

Notes

Do not stir the layers; the dry cake mix should remain on the bottom, blueberries in the middle, and butter on top to achieve the classic dump cake texture. Use unsalted butter for better flavor control. If the top browns too quickly, tent loosely with foil. Frozen blueberries can be used without thawing. Let the cake cool before serving to thicken the juices.

Nutrition

Keywords: dump cake, lemon blueberry cake, easy dessert, quick cake, lemon cake mix, blueberry dessert, simple ingredients, zesty cake