Mocha Layer Cake with Chocolate-Rum Cream Filling

A Decadent Dessert for True Coffee and Chocolate Lovers

If you love the bold bitterness of coffee balanced with rich chocolate and a touch of warmth from rum, this Mocha Layer Cake is your dream dessert. Deep cocoa flavor, subtle espresso notes, and a luxurious chocolate-rum cream filling come together in a stunning layered cake that feels elegant, indulgent, and unforgettable.

This cake is perfect for special occasions—dinner parties, anniversaries, holidays, or whenever you want to impress. The layers are soft and moist, the filling is silky and flavorful, and the overall balance is rich without being overwhelming. Every slice delivers depth, sophistication, and pure dessert bliss.

Why You’ll Love This Cake

Intense mocha flavor from cocoa and coffee
Moist, tender cake layers that slice beautifully
Creamy chocolate-rum filling with a smooth finish
Elegant yet achievable for home bakers
Perfect make-ahead dessert for celebrations

This is the kind of cake that feels bakery-quality but is completely doable in your own kitchen.

Ingredients

For the Mocha Cake Layers

2½ cups all-purpose flour
¾ cup unsweetened cocoa powder
2½ cups granulated sugar
2 teaspoons baking soda
1 teaspoon baking powder
1 teaspoon salt
3 large eggs, room temperature
1 cup vegetable oil
1¼ cups strong brewed coffee, hot
1 cup milk
2 teaspoons vanilla extract

For the Chocolate-Rum Cream Filling

1½ cups heavy whipping cream, cold
6 oz semi-sweet chocolate, finely chopped
3 tablespoons dark rum
2 tablespoons powdered sugar
1 teaspoon vanilla extract

Optional Topping

Cocoa powder or chocolate shavings
Espresso beans
Chocolate ganache drizzle

How to Make the Mocha Cake

Step 1: Prepare the Pans and Oven

Preheat your oven to 350°F (175°C). Grease and line three 8-inch round cake pans with parchment paper.

Step 2: Mix Dry Ingredients

In a large bowl, whisk together the flour, cocoa powder, sugar, baking soda, baking powder, and salt until well combined.

Step 3: Add Wet Ingredients

Add eggs, vegetable oil, milk, and vanilla extract to the dry mixture. Mix until smooth and fully incorporated.

Step 4: Add Hot Coffee

Slowly pour in the hot brewed coffee while mixing. The batter will be thin—this is normal and essential for a moist cake.

Step 5: Bake

Divide the batter evenly among the prepared pans. Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.

Allow cakes to cool in pans for 10 minutes, then transfer to wire racks to cool completely.

Making the Chocolate-Rum Cream Filling

Step 1: Melt the Chocolate

Heat ½ cup of the heavy cream until just simmering. Pour over chopped chocolate and let sit for 2 minutes. Stir until smooth. Add rum and vanilla extract. Allow the mixture to cool to room temperature.

Step 2: Whip the Cream

In a separate bowl, whip the remaining cream with powdered sugar until soft peaks form.

Step 3: Combine

Gently fold the cooled chocolate-rum mixture into the whipped cream until smooth and fluffy. Chill for 20–30 minutes before assembling the cake.

Assembling the Cake

Place one cake layer on a serving plate. Spread an even layer of chocolate-rum cream filling over the top. Repeat with the second layer. Top with the final cake layer.

For a clean look, dust the top with cocoa powder or decorate with chocolate shavings and espresso beans. For extra indulgence, drizzle with chocolate ganache.

Tips for Perfect Results

Use strong coffee or espresso for bold mocha flavor
Cool cakes completely before filling
Chill the filling for easier spreading
Use high-quality chocolate for best taste
Don’t overmix once flour is added

Variations and Substitutions

Alcohol-Free: Replace rum with coffee or vanilla extract
Extra Mocha: Add espresso powder to the batter
Dark Chocolate Lovers: Use 70% cocoa chocolate
Lighter Version: Use mascarpone instead of whipped cream
One-Bowl Cake: Mix everything together for simplicity

Serving and Storage

Serve this cake slightly chilled or at room temperature for best texture.

Refrigerator: Store covered for up to 4 days
Freezer: Freeze unfrosted layers for up to 2 months
Make-Ahead: Bake layers a day early and assemble before serving

Final Thoughts

This Mocha Layer Cake with Chocolate-Rum Cream Filling is a celebration of bold flavors and refined indulgence. Rich chocolate, aromatic coffee, and a hint of rum come together in a dessert that feels luxurious without being overwhelming. Whether you’re hosting a special event or simply treating yourself, this cake delivers elegance in every bite.