This Chocolate Mound Cake recipe is simple to make and truly delicious. Moist chocolate cake layers are combined with a sweet, gooey coconut filling and finished with a warm chocolate frosting. Using a boxed cake mix keeps this dessert quick and easy while delivering homemade flavor.
This cake is one of my favorite desserts to bake for family and friends. Starting with a Devil’s Food or rich chocolate cake mix keeps prep fast, and the coconut filling and fudge-like frosting give it an irresistible, bakery-style finish. After one bite, it may become your new go-to dessert.
Ingredients You’ll Need
- Devil’s Food Cake Mix (or another rich chocolate cake mix)
- Sweetened Flaked Coconut – adds texture and coconut flavor
- Sweetened Condensed Milk – creates the creamy, gooey coconut filling
- Confectioner’s (Powdered) Sugar – for sweetening the coconut filling and the frosting
- Butter – used in the chocolate frosting for richness
- Unsweetened Cocoa Powder – for a deep chocolate frosting flavor
- Milk – adds moisture and helps the frosting reach the right consistency
- Vanilla Extract – optional, enhances flavor
How to Make Chocolate Mound Cake — Step by Step
Prefer visuals? The images in this post show each stage. If you like a printable version, use the ingredient and instruction sections below as your guide.
Step 1: Prepare the Cake
Preheat your oven following the directions on the cake mix box. Check the package for any additional ingredients (commonly eggs, oil, and water). For a richer taste, replace the water called for on the box with whole milk or brewed coffee. Pour the prepared batter into a greased or parchment-lined 9×13-inch baking dish and bake as directed.
Pro Tip: Swap water for milk or coffee to intensify the chocolate flavor.
Step 2: Poke Holes & Soak the Cake
When the cake comes out of the oven, let it cool for about 5 minutes so it’s still warm enough to absorb the filling. Use a fork to poke holes all over the cake, going deep enough that the filling can seep into the cake. The more holes you make, the more evenly the filling will spread through the cake.
Step 3: Make the Coconut Filling
In a medium bowl, combine:
- Sweetened shredded coconut
- Sweetened condensed milk
- Powdered sugar (confectioner’s sugar)
Stir until the mixture is thick, creamy, and well combined. Slowly spoon or pour the coconut mixture over the warm cake, letting it sink into the holes to create a gooey layer throughout.
Step 4: Make the Warm Chocolate Frosting
In a small saucepan over medium heat, melt 1 stick (1/2 cup) unsalted butter. Whisk in unsweetened cocoa powder, powdered sugar, and about 1/4 cup whole milk. Stir continuously until the mixture comes together into a smooth, glossy sauce with a hot-fudge consistency. Remove from heat and stir in 1 teaspoon vanilla extract.
Step 5: Frost & Finish
Immediately pour the warm chocolate frosting over the coconut-filled cake and spread it evenly. For extra texture and flavor, sprinkle additional sweetened shredded coconut on top. Let the cake cool for at least 30 minutes before slicing to allow the frosting to set.
If you love more chocolate, add mini chocolate chips or crushed candy bars while the frosting is still warm so they melt slightly into the top layer.
Serving Suggestions
You can serve this cake warm for a soft, gooey bite, or chill it overnight for a denser, fudgier texture. Try pairing slices with a scoop of vanilla ice cream, a dollop of whipped cream, or a drizzle of warm chocolate sauce for an indulgent finish. Toasted coconut flakes or mini chocolate chips make great optional toppings.
Ingredients (Detailed)
- 1 box Devil’s Food Cake Mix (or Chocolate Fudge Cake Mix)
- 5 1/2 cups sweetened shredded coconut
- 14 oz sweetened condensed milk
- 1 1/2 cups powdered sugar (for filling)
- 1 stick (1/2 cup) unsalted butter
- 16 oz powdered sugar (for frosting, adjust to taste)
- 7 tbsp unsweetened cocoa powder
- 1/4 cup whole milk (or 2%)
- 1 tsp vanilla extract
Instructions (Concise)
- Bake the cake according to the box instructions in a greased 9×13 pan.
- Let cake cool 5 minutes, then poke holes all over with a fork.
- Mix coconut, sweetened condensed milk, and powdered sugar until thick. Spoon over cake, allowing it to fill the holes.
- In a saucepan, melt butter, whisk in cocoa, powdered sugar, and milk until smooth. Remove from heat and add vanilla.
- Pour warm frosting over the cake, spread evenly, and top with extra coconut if desired. Cool 30 minutes before slicing.
Tips, Variations & Storage
- Ingredient swaps: Use Chocolate Fudge mix if Devil’s Food isn’t available. Substitute the water in the cake mix with milk or coffee for richer flavor.
- No coconut? Replace the filling with marshmallow fluff, chocolate ganache, or cream cheese frosting.
- Storage: Keep covered at room temperature up to 2 days, refrigerate up to 5 days for a fudgier texture, or freeze individual slices for up to 3 months.
- Baking tip: If using a convection oven, check the cake 5 minutes earlier than the package time.
Common Questions
How do I make a boxed cake taste homemade?
Use milk instead of water, add a spoonful of sour cream, and a splash of vanilla extract to boost richness and texture.
Why was my cake dry?
Dry cake often means it baked too long or your oven runs hot. Check a few minutes early and use the toothpick test. Ensure you add the required oil and eggs from the box directions.
Can I change the pan size?
Yes. For a layer cake, divide batter between two 8-inch pans. For a thicker cake, use a 9×9 pan and monitor baking time closely.
Nutrition (Approximate per serving)
Calories: 604 kcal | Carbohydrates: 81 g | Protein: 7 g | Fat: 31 g | Sugar: 65 g
