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Triple Chocolate Mousse Cake

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Triple Chocolate Mousse Cake is the ultimate chocolate lover’s dessert featuring three decadent layers: a fudgy brownie base, a fluffy chocolate mousse center, and a rich ganache topping. This make-ahead, show-stopping cake is perfect for birthdays, holidays, or any occasion where you want to impress with indulgence and elegance.

Ingredients

  • 6 oz (170 g) unsweetened chocolate, coarsely chopped
  • ½ cup (113 g) unsalted butter, cut into pieces
  • 1 cup (200 g) granulated sugar
  • 3 large eggs, room temperature
  • 1 tbsp pure vanilla extract
  • 1 cup (130 g) all-purpose flour
  • 3 tbsp Dutch-process cocoa powder
  • ½ tsp salt
  • ¾ tsp gelatin powder
  • 1 tbsp water
  • 6 oz (168 g) semisweet chocolate, coarsely chopped
  • 1 ½ cups (360 ml) cold heavy cream
  • 2 tbsp granulated sugar
  • ¾ cup (180 ml) heavy cream
  • 1 tbsp unsalted butter
  • 9 oz (252 g) semisweet chocolate, coarsely chopped

Instructions

  1. Preheat oven to 350°F (175°C). Line and grease an 8-inch springform pan.
  2. Melt chocolate and butter together until smooth. Whisk in sugar and let cool slightly.
  3. Add eggs one at a time, then vanilla. Sift in flour, cocoa powder, and salt. Fold to combine.
  4. Pour into pan and bake for 20–25 minutes. Cool completely.
  5. Bloom gelatin in water for 5 minutes. Heat ½ cup cream with sugar until simmering. Pour over chocolate and gelatin. Stir until smooth.
  6. Whip remaining 1 cup cream to medium-stiff peaks. Lighten chocolate mixture with ⅓ of the whipped cream, then fold in the rest.
  7. Spread mousse over cooled brownie base and chill.
  8. Heat cream and butter to near boil. Pour over chocolate and stir until glossy.
  9. Cool ganache to room temperature and spread over mousse.
  10. Chill cake for at least 1 hour to set before serving.

Notes

  • For deeper flavor, swap semisweet chocolate with dark chocolate.
  • Add liqueur like coffee or orange for an adult twist.
  • Incorporate nuts into the brownie layer for texture.
  • Garnish with chocolate curls or fresh berries for a festive finish.
  • Slice with a hot knife for clean edges.

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