- 1 stick (½ cup) butter
- 7 tbsp cocoa powder
- 16 oz confectioner’s sugar
- ¼ cup milk
- 1 tsp vanilla extract
Directions
Step 1 — Bake the Cake
Preheat your oven to 350°F (175°C). Prepare a 9×13-inch baking pan with parchment paper or non-stick spray. Mix the Devil’s Food Cake Mix according to the package directions — for an extra rich flavor, swap the water with whole milk. Pour the batter into the prepared pan and bake as directed, usually 30–35 minutes, or until a toothpick inserted in the center comes out clean. Remove from the oven and let the cake cool for about 5 minutes.
Step 2 — Make the Coconut Filling
While the cake is baking, combine the sweetened flaked coconut, sweetened condensed milk, confectioner’s sugar, and vanilla extract in a large bowl. Mix until well combined. The filling should be thick, creamy, and generously sweet — just like the inside of a Mounds bar. Once the cake comes out of the oven and has cooled slightly, gently spread the coconut mixture evenly over the top of the cake, covering every inch.
