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Chocolate Mousse Layer Cake


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  • Author: Yusra
  • Total Time: 2 hours
  • Yield: 12 slices
  • Diet: Vegetarian

Description

A stunning three-layer dessert featuring moist chocolate cake, airy chocolate mousse, and a glossy ganache topping — perfect for chocolate lovers and special occasions.


Ingredients

  • Chocolate Cake Base:
    • 1 cup (133 g) all-purpose flour
    • ¾ cup (150 g) granulated sugar
    • ⅓ cup (30 g) unsweetened cocoa powder
    • 1 tsp baking soda
    • ½ tsp baking powder
    • ¼ tsp salt
    • ¼ cup (60 ml) vegetable oil
    • 1 large egg, room temperature
    • 1 tsp pure vanilla extract
    • ½ cup (120 ml) full-fat buttermilk, room temperature
    • ½ cup (120 ml) hot coffee or hot water
  • Chocolate Mousse Filling:
    • 2 cups (370 g) semi-sweet chocolate chips
    • 2⅓ cups (560 ml) heavy whipping cream, divided
    • 2 tbsp powdered sugar
    • 2 tsp pure vanilla extract
  • Chocolate Ganache Topping:
    • ½ cup (93 g) semi-sweet chocolate chips
    • ½ cup (120 ml) heavy whipping cream

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.
  2. In a large bowl, whisk together flour, sugar, cocoa powder, baking soda, baking powder, and salt.
  3. Add oil, egg, vanilla, buttermilk, and hot coffee (or water). Mix until smooth — the batter will be thin.
  4. Pour into prepared pan and bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean. Let cake cool completely.
  5. For the mousse, melt chocolate chips using a microwave or double boiler. Cool slightly.
  6. Whip 2 cups of heavy cream with powdered sugar and vanilla extract until soft peaks form.
  7. Fold one-third of the whipped cream into melted chocolate to lighten it. Gently fold in the rest until smooth. Chill until slightly firm.
  8. Place cooled cake on a serving plate. Spread mousse over the top evenly. If you made two cake layers, repeat layering. Chill for at least 30 minutes.
  9. For ganache, heat ½ cup cream until just simmering. Pour over ½ cup chocolate chips and let sit for 2 minutes. Stir until glossy and smooth. Cool until pourable.
  10. Pour ganache over the cake, allowing it to drip down the sides. Chill for another 30 minutes to set before slicing and serving.

Notes

  • Make sure the cake is completely cooled before applying the mousse.
  • Chill between mousse and ganache layers for best results.
  • Use high-quality chocolate for optimal flavor and texture.
  • Prep Time: 20 minutes
  • Cook Time: 35 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 510
  • Sugar: 32g
  • Sodium: 180mg
  • Fat: 35g
  • Saturated Fat: 21g
  • Unsaturated Fat: 11g
  • Trans Fat: 0g
  • Carbohydrates: 47g
  • Fiber: 3g
  • Protein: 5g
  • Cholesterol: 90mg