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Decadent Chocolate Mousse Cake


  • Author: Sarah
  • Total Time: 85 minutes
  • Yield: 8 servings 1x

Description

A rich and elegant dessert featuring three layers: moist chocolate cake, fluffy chocolate mousse, and a smooth milk chocolate ganache. Perfect for celebrations or as an indulgent treat.


Ingredients

Scale
  • For the Chocolate Cake:
  • 25g cocoa powder
  • 1/2 tsp instant coffee
  • 40ml hot water
  • 100ml vegetable oil
  • 60ml buttermilk
  • 2 large eggs
  • 100g plain flour
  • 60g granulated sugar
  • 60g light brown sugar
  • 1/2 tsp baking soda
  • 1 tsp white vinegar
  • For the Chocolate Mousse:
  • 300ml double cream (heavy cream)
  • 200g dark chocolate
  • 200g milk chocolate
  • 4 egg whites
  • 1/2 tsp cream of tartar
  • 50g granulated sugar
  • 4 egg yolks
  • 2 tsp vanilla extract
  • 1/4 tsp salt
  • For the Milk Chocolate Ganache:
  • 200g milk chocolate
  • 120ml double cream

Instructions

  1. Preheat the oven to 180°C (350°F). Grease and line an 8-inch round cake tin.
  2. For the cake: In a large bowl, whisk together cocoa powder, instant coffee, and hot water until smooth. Add oil, buttermilk, and eggs, and mix well. Fold in the flour, granulated sugar, and brown sugar until just combined.
  3. Mix baking soda with vinegar and fold into the batter. Pour the batter into the prepared tin and bake for 30–35 minutes. Let the cake cool completely.
  4. For the mousse: Whip the double cream to firm peaks and refrigerate. Melt the dark and milk chocolate together until smooth. In another bowl, beat egg whites and cream of tartar to stiff peaks, gradually adding the sugar. Whisk egg yolks, vanilla, and salt into the melted chocolate. Gently fold in the whipped cream and then the egg whites.
  5. Place the cooled cake in a springform tin and pour the mousse over it. Smooth the top and freeze for 20 minutes to set slightly.
  6. For the ganache: Melt the milk chocolate and cream together in the microwave in 15-second intervals, stirring until smooth. Pour over the mousse layer and refrigerate the cake overnight.
  7. To serve, carefully remove the cake from the tin, garnish as desired, and slice into portions. Enjoy!

Notes

Ensure the mousse layer is set by chilling overnight. You can substitute buttermilk with yogurt or make your own using milk and lemon juice.

  • Prep Time: 50 minutes
  • Cook Time: 35 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: International

Nutrition

  • Serving Size: 1 slice
  • Calories: 480
  • Fat: 32g
  • Carbohydrates: 42g
  • Protein: 7g

Keywords: chocolate mousse cake, layered dessert, ganache