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Decadent Double Chocolate Mousse Cake: A Dark and Light

Ingredients

Scale

For the Chocolate Cake Base:

  • 1 cup all-purpose flour
  • ½ cup unsweetened cocoa powder
  • 1 teaspoon baking powder
  • ¼ teaspoon salt
  • ½ cup unsalted butter, softened
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • ½ cup milk

For the Dark and Milk Chocolate Mousse Layers:

  • 200g dark chocolate, chopped
  • 200g milk chocolate, chopped
  • 600ml heavy cream, divided
  • 2 teaspoons unflavored gelatin powder
  • 4 tablespoons water

For the Dark Chocolate Glaze:

  • 100g dark chocolate, chopped
  • 100ml heavy cream

For Decoration:

  • Chocolate curls or shavings
  • Fresh mint leaves

Instructions

Bake the Chocolate Cake Base:

  1. Preheat oven to 350°F (175°C). Grease and flour an 8-inch springform pan.
  2. Whisk together flour, cocoa powder, baking powder, and salt.
  3. Cream together butter and sugar until light and fluffy. Beat in eggs one at a time, then stir in vanilla.
  4. Alternately add dry ingredients and milk to the wet ingredients, mixing until just combined.
  5. Pour batter into prepared pan and bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
  6. Let cool completely in the pan before removing.  

Prepare the Dark and Milk Chocolate Mousse Layers:

  1. Bloom gelatin in water.
  2. Melt dark chocolate over a double boiler.
  3. Warm half of the heavy cream and stir in the bloomed gelatin until dissolved.
  4. Gradually whisk the warm cream mixture into the melted chocolate until smooth.
  5. Whip the remaining heavy cream until stiff peaks form.
  6. Gently fold the whipped cream into the chocolate mixture until combined.
  7. Repeat steps 2-6 with the milk chocolate.

Assemble and Glaze the Cake:

  1. Place the cooled cake base on a serving plate.
  2. Spread the dark chocolate mousse over the cake base.
  3. Top with the milk chocolate mousse, smoothing the top.
  4. Melt dark chocolate and heavy cream over a double boiler until smooth.
  5. Drizzle the chocolate glaze over the cake, allowing it to drip down the sides.
  6. Refrigerate for at least 4 hours, or preferably overnight, to set.
  • Author: Olivia Chen