Mocha Layer Cake with Chocolate-Rum Cream Filling Recipe

This cake is a decadent fusion of moist mocha sponge layers, a luscious chocolate-rum cream filling, and a glossy ganache topping. The coffee enhances the chocolate flavor, while the rum adds a sophisticated warmth. Whether you’re hosting a dinner party or celebrating a milestone, this cake is guaranteed to impress

Ingredients

For the Mocha Cake:

2 cups all-purpose flour
1¾ cups granulated sugar
¾ cup unsweetened cocoa powder
1½ tsp baking powder
1½ tsp baking soda
1 tsp salt
2 large eggs
1 cup buttermilk
½ cup vegetable oil
2 tsp pure vanilla extract
1 cup strong brewed coffee (cooled)

For the Chocolate-Rum Cream Filling:

4 cups whipping cream
1½ cups semisweet chocolate chips
2 tbsp unsalted butter
2 tbsp dark rum (adjust to taste)
¼ cup powdered sugar (optional, to taste)

For the Chocolate Ganache:

1 cup semisweet chocolate chips
½ cup heavy cream

Instructions

Step 1: Prepare the Mocha Cake

Preheat oven to 350°F (175°C). Grease and flour three 9-inch round cake pans.
In a large bowl, sift together flour, sugar, cocoa powder, baking powder, baking soda, and salt.
Add eggs, buttermilk, oil, and vanilla. Mix until smooth.
Stir in the cooled coffee and mix until fully incorporated.
Divide batter evenly among the pans and bake for 30–35 minutes, or until a toothpick comes out clean.
Cool in pans for 10 minutes, then transfer to wire racks to cool completely.

Step 2: Make the Chocolate-Rum Cream Filling

In a saucepan, heat whipping cream over medium heat until it begins to simmer.
Remove from heat and add chocolate chips, butter, and rum. Stir until smooth.
Let the mixture cool to room temperature, then refrigerate until chilled and thickened (about 2–3 hours).
Once chilled, whip the mixture until it holds soft peaks. Add powdered sugar to taste.

Step 3: Prepare the Ganache

Heat heavy cream until hot (not boiling).
Pour over chocolate chips in a bowl. Let sit for 1 minute, then stir until smooth.
Let cool slightly until it thickens but is still pourable.

Step 4: Assemble the Cake

Place one cake layer on a serving plate. Spread a generous layer of chocolate-rum cream filling.
Repeat with the second and third layers.
Pour ganache over the top, letting it drip down the sides for a dramatic finish.
Chill for at least 30 minutes before serving to set the layers.

Tips & Variations

Make Ahead: The cake layers and filling can be made a day in advance. Assemble the day of serving.
Alcohol-Free Option: Substitute rum with coffee extract or vanilla for a kid-friendly version.
Decorating Ideas: Garnish with chocolate curls, espresso beans, or a dusting of cocoa powder.

This cake is a celebration in every bite—moist, rich, and layered with flavor. Would you like a printable version or a creative twist on this recipe, like a cupcake adaptation or a tropical variation?