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Homemade lemon dump cake with golden buttery topping in a baking dish on a white kitchen table, photographed from above.

Lemon Dump Cake

Easy lemon dump cake with bright citrus flavor and buttery topping. Foolproof and perfect for any occasion.
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Prep Time 10 minutes
Cook Time 45 minutes
Cooling Time 10 minutes
Total Time 1 hour 5 minutes
Servings: 12 Slices
Course: Dessert
Cuisine: American
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

  • 1 box Yellow cake mix dry, do not mix
  • 1 can Lemon pie filling 20–21 oz
  • 2 tablespoon Fresh lemon zest optional for extra flavor
  • ½ cup Butter cold, cut into small pieces
  • Optional - Cream cheese optional, for swirl variation
  • Optional - Blueberries optional, fresh or frozen
  • Optional - Pineapple chunks optional, drained

Equipment

  • 1 9x13 inch baking dish greased
  • 1 set Measuring cups
  • 2 Mixing bowls
  • 1 Whisk
  • 1 Rubber spatula
  • 1 Sharp knife
  • 1 Cutting board
  • 1 pair Oven mitts
  • 1 Cooling rack

Method
 

  1. Preheat oven to 350°F and grease the baking dish.
  2. Spread lemon pie filling evenly into the greased baking dish and sprinkle with lemon zest if using.
  3. Top evenly with dry yellow cake mix.
  4. Scatter cold butter pieces evenly over the top.
  5. Bake for 45–50 minutes or until the top is golden brown.
  6. Cool for 10 minutes before serving.

Notes

Optional add-ins like cream cheese, blueberries, or pineapple chunks can add variety. Best served warm or at room temperature.