Mocha Cake with Chocolate-Rum Cream Filling

When coffee meets chocolate, magic happens. Add a hint of rum, and you’ve got a dessert that feels truly luxurious. This Mocha Cake with Chocolate-Rum Cream Filling is rich, moist, and full of bold flavor, making it a showstopper for birthdays, dinner parties, or whenever you want to impress.

The cake itself is light and moist with just the right balance of coffee and cocoa. The star, though, is the luscious chocolate-rum cream filling—silky, boozy, and indulgent—layered generously between moist cake rounds. Top it with a whipped ganache or mocha frosting, and you’ve got a dessert that feels both sophisticated and irresistible.

Why You’ll Love This Cake

  • Bold Flavor Combo – Coffee, chocolate, and rum come together in harmony.
  • Moist & Tender Cake – Soft crumb that holds up beautifully to the filling.
  • Elegant Presentation – Perfect for special occasions.
  • Make-Ahead Friendly – Cake layers and filling can be prepped in advance.
  • Customizable – Use light or dark rum (or none at all) depending on preference.

Ingredients You’ll Need

For the Mocha Cake:

  • 1 ¾ cups all-purpose flour
  • ¾ cup unsweetened cocoa powder
  • 2 cups granulated sugar
  • 2 teaspoons baking powder
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • 2 large eggs
  • 1 cup buttermilk
  • ½ cup vegetable oil
  • 2 teaspoons vanilla extract
  • 1 cup hot brewed coffee (strong)

For the Chocolate-Rum Cream Filling:

  • 1 cup heavy cream
  • 8 oz semisweet chocolate, chopped
  • 2 tablespoons unsalted butter
  • 2–3 tablespoons dark rum

For Frosting (optional):

  • Mocha buttercream or whipped ganache
  • Cocoa powder or chocolate shavings, for garnish

Step-by-Step Instructions

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