Print

Dark Chocolate Mousse Cake Recipe

Dark Chocolate Mousse Cake Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 28 reviews

Indulge in the ultimate chocolate lover’s dream with this Dark Chocolate Mousse Cake. A decadent and moist dark chocolate cake filled with a luscious chocolate mousse and topped with a rich chocolate ganache, this cake is a true showstopper that will impress any crowd.

Ingredients

Cake:

  • 1 and 3/4 cups (219g) all-purpose flour (spooned & leveled)
  • 1 and 3/4 cups (350g) granulated sugar
  • 3/4 cup (64g) unsweetened natural cocoa powder
  • 2 teaspoons espresso powder (optional)
  • 2 teaspoons baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 3/4 cup (180g) full-fat sour cream, at room temperature
  • 1/2 cup (113g/120ml) vegetable oil
  • 2 large eggs, at room temperature
  • 1/2 cup (120g/ml) buttermilk, at room temperature
  • 2 teaspoons pure vanilla extract
  • 1/2 cup (120g/ml) hot water or black coffee
  • 1 cup (170g) semi-sweet mini chocolate chips tossed in 1 Tbsp flour (optional)

Chocolate Mousse:

  • 1/2 cup (120g/ml) hot water
  • 1/4 cup (21g) unsweetened natural or Dutch-process cocoa powder
  • 8 ounces (226g) quality semi-sweet chocolate, finely chopped
  • 2 cups (480g/ml) heavy cream, cold
  • 2 Tablespoons confectioners’ sugar
  • 1/2 teaspoon pure vanilla extract

Chocolate Ganache:

  • 8 ounces (226g) quality semi-sweet chocolate, finely chopped
  • 1 cup (240g/ml) heavy cream
  • optional, for garnish: fresh berries and/or chocolate shavings

Instructions

  1. Make the cake: Preheat the oven, prepare pans, whisk dry ingredients, mix wet ingredients, combine, fold in chocolate chips, divide batter, bake, and cool.
  2. Make the chocolate mousse: Whisk hot water and cocoa powder, melt chocolate, whip cream, fold in chocolate mixture, chill.
  3. Assemble the cake: Level cakes, layer with mousse, chill.
  4. Make the chocolate ganache: Melt chocolate with warm cream, thicken.
  5. Finish the cake: Pour ganache, garnish, chill, and serve.

Notes

  • Prepare ganache and mousse ahead of time for convenience.
  • Store leftover cake in the refrigerator for up to 5 days.
  • Special tools like cake pans, whisk, and spatula are recommended.

Nutrition