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Banana Split Dump Cake

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This easy banana split dump cake is layered with crushed pineapple, strawberry filling, and topped with coconut, walnuts, and fresh bananas—like the classic sundae in dessert form!

  • Author: Emma
  • Prep Time: 10 minutes
  • Cook Time: 40 minutes
  • Total Time: 50 minutes
  • Yield: 12 servings
  • Category: Dessert
  • Method: Baked
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

20 oz crushed pineapple (juice included)

21 oz strawberry pie filling

1 package white cake mix

½ cup salted butter, cold

1 cup shredded sweetened coconut

1 cup chopped walnuts

2 to 3 medium bananas

Instructions

Preheat the Oven:
Preheat oven to 350°F (175°C).

Layer the Base:
Spread crushed pineapple (with juice) evenly into the bottom of a 9×13-inch baking dish.
Spoon strawberry pie filling over the pineapple and spread evenly.

Add Cake Mix:
Sprinkle the dry white cake mix evenly over the fruit layer. Do not stir.

Add Butter:
Slice cold butter into thin pats and arrange evenly over the entire top of the cake mix.
Tip: Cold butter slices better and holds its shape for even coverage.

Add Toppings:
Sprinkle the shredded coconut and chopped walnuts evenly over the top.

Bake:
Bake for 40 minutes, or until the topping is golden brown and the filling is bubbling at the edges.
The coconut and walnuts should be toasted but not burnt.

Cool and Serve:
Allow the cake to cool for at least 30 minutes before serving.
Slice bananas and arrange on top just before serving.
Optional: Drizzle banana slices with lemon juice to prevent browning.

Notes

Use a 9×13-inch pan for ideal texture and even baking. Smaller pans make the cake thicker and change the consistency.

Choose a white cake mix without pudding for best results.

Cold butter helps distribute moisture evenly for a perfect topping.

Keep an eye on the cake near the end of baking — oven times vary.

Top with whipped cream, cherries, or ice cream for a true “banana split” experience.