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Decadent Chocolate Mousse Cake Recipe

Decadent Chocolate Mousse Cake Recipe
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★★★★★

5.2 from 10 reviews

Indulge in this Decadent Chocolate Mousse Cake, combining a rich chocolate cake base with a light and airy chocolate mousse topping. Perfect for celebrations or whenever you crave a luscious chocolate dessert, this cake features layers of moist chocolate cake filled with smooth chocolate mousse and topped with cocoa powder and chocolate shavings for an elegant finish.

Ingredients

Scale

Cake

  • 1 box chocolate cake mix (for a Chocolate 9×13 Cake)

Mousse

  • 3 cups heavy cream, divided
  • 1 cup semi-sweet chocolate chips
  • 1/2 cup powdered sugar
  • 1 teaspoon vanilla extract

Garnish (Optional)

  • 1/4 cup cocoa powder (for dusting)
  • Chocolate shavings or curls

Instructions

  1. Bake the Chocolate Cake: Prepare the chocolate cake mix according to the package directions and bake in a 9×13-inch pan. Once baked, allow the cake to cool completely. After cooling, carefully remove the cake from the pan and slice it horizontally in half using a long serrated knife to create two thin, even layers. Alternatively, bake in two separate pans for convenience.
  2. Make the Chocolate Ganache Base for Mousse: Heat 1 cup of heavy cream in a small saucepan over medium heat until it just starts to simmer. Remove from heat and pour over the semi-sweet chocolate chips in a bowl. Let it sit for 2–3 minutes to melt the chocolate, then stir gently until smooth and glossy. Let the ganache cool to room temperature; this will be the chocolate base for your mousse.
  3. Whip the Cream for Mousse: In a large mixing bowl, combine the remaining 2 cups of heavy cream, powdered sugar, and vanilla extract. Using an electric mixer on high speed, beat the mixture until stiff peaks form, which will create a light and fluffy texture.
  4. Fold and Create the Mousse: Gently fold the cooled ganache into the whipped cream using a spatula. Fold just until fully incorporated to maintain the mousse’s light and airy consistency. Avoid overmixing.
  5. Assemble the Layers: Place the bottom cake layer on a serving plate or cake board. Spread half of the mousse evenly over the cake layer. Carefully position the second cake layer on top, then spread the remaining mousse over the top and around the sides, smoothing for a polished look.
  6. Garnish and Chill: Lightly sift cocoa powder over the top of the cake if desired, and add chocolate shavings or curls for an elegant decoration. Refrigerate the cake for at least 2–4 hours or overnight to allow the mousse to set fully before serving.

Notes

  • For best results, make sure the ganache is completely cooled before folding into whipped cream to prevent melting.
  • Slicing the cake horizontally can be easier if the cake is chilled first.
  • You can substitute semi-sweet chocolate chips with dark or milk chocolate chips depending on your preference.
  • Store the cake refrigerated and consume within 3 days.
  • For a firmer mousse, chill the ganache before folding it with the whipped cream.

Nutrition

Keywords: Chocolate mousse cake, chocolate cake with mousse, layered chocolate dessert, chocolate ganache cake, easy chocolate cake recipe

Find it online: https://leofoster.com/decadent-chocolate-mousse-cake-recipe/