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Coconut Custard Dump Cake

🥥🍰 Coconut Custard Dump Cake


  • Author: iliass
  • Total Time: 1 hour 30 minutes

Description

If you’re searching for a dessert that’s incredibly easy to make yet tastes like it came straight from a Southern bakery, Coconut Custard Dump Cake is the perfect choice. This rich and creamy dessert combines the silky texture of homemade coconut custard with the buttery crispness of a golden cake topping. As it bakes, the layers magically transform into a luscious dessert with creamy custard on the bottom and a tender, buttery cake crust on top.


Ingredients

Scale

🥥 For the Coconut Custard Layer

  • 1 can (14 ounces) sweetened condensed milk
  • 1 can (13.5 ounces) full-fat coconut milk
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1 teaspoon coconut extract (optional)
  • ¼ teaspoon salt
  • 2 cups sweetened shredded coconut

🍰 For the Cake Layer

  • 1 box (15.25 ounces) butter cake mix or yellow cake mix
  • 1 cup unsalted butter, melted

✨ Optional Add-Ins

  • ½ cup white chocolate chips
  • ½ cup chopped macadamia nuts
  • ½ cup toasted pecans
  • ½ cup crushed pineapple (well-drained)
  • 1 teaspoon lime zest

🍦 For Garnish

  • Toasted coconut flakes
  • Whipped cream
  • Vanilla ice cream
  • White chocolate curls
  • Fresh pineapple slices
  • Mint leaves

Instructions

Step 1: Prepare the Oven

Preheat oven to 350°F (175°C).

Grease a 9×13-inch baking dish with butter or nonstick spray.


Step 2: Make the Coconut Custard

In a large bowl whisk together:

  • Sweetened condensed milk
  • Coconut milk
  • Eggs
  • Vanilla extract
  • Coconut extract
  • Salt

Whisk until smooth.

Fold in the shredded coconut.

Pour the mixture evenly into the prepared baking dish.


Step 3: Add Optional Ingredients

If desired, sprinkle over the custard:

  • White chocolate chips
  • Chopped pecans
  • Macadamia nuts
  • Crushed pineapple

Spread evenly.


Step 4: Add the Cake Mix

Evenly sprinkle the dry cake mix over the entire custard layer.

Do not stir.

Use the back of a spoon to distribute the cake mix evenly if necessary.


Step 5: Add the Butter

Slowly drizzle the melted butter over the dry cake mix.

Cover as much of the cake mix as possible to ensure an evenly golden topping.


Step 6: Bake

Bake for 50–55 minutes, or until:

  • The top is golden brown.
  • The custard is bubbling around the edges.
  • The center is mostly set with only a slight jiggle.

Step 7: Cool

Allow the cake to cool for 20 minutes before serving.

For a firmer custard, refrigerate for at least 2 hours.


Step 8: Garnish and Serve

Top with:

  • Toasted coconut flakes
  • Whipped cream
  • Vanilla ice cream
  • White chocolate curls
  • Fresh pineapple

Serve warm or chilled.

Notes

  • Use full-fat coconut milk for the richest texture.
  • Room-temperature eggs blend more smoothly into the custard.
  • Do not mix the cake mix into the custard—the layers should remain separate.
  • Cover the baking dish loosely with foil if the top browns too quickly.
  • Toast the coconut garnish for deeper flavor.
  • Chill leftovers before storing.
  • Prep Time: 15 minutes
  • Cooling Time: 20 minutes
  • Cook Time: 55 minutes

Nutrition

  • Calories: 540
  • Sugar: 38g
  • Sodium: 390mg
  • Carbohydrates: 57g
  • Protein: 7g