Decadent Double Chocolate Mousse Cake with Crunchy Rock Frosting

This Double Chocolate Mousse Cake is a luxurious indulgence, combining the silky textures of white and dark chocolate mousse layered over a moist sponge cake and topped with a crunchy Rocher frosting. Each element of the cake contributes to a complex layering of textures and flavours, from the creamy mousse to the rich, airy sponge to the crisp chocolate finish. This dessert is as pleasing to the palate as it is to the eye, making it an irresistible addition to any culinary occasion.

Why you'll love this double chocolate mousse cake

Chocolate lovers will delight in the two layers of mousse, each offering a distinct chocolate experience: the delicate, creamy texture of white chocolate and the intense, rich flavor of dark chocolate. The sponge cake provides a light and fluffy base that contrasts beautifully with the creamy mousse, while the Rocher icing adds a delicious crunch, enhancing the textural complexity of the dessert. This cake is a perfect blend of sophistication and indulgence, sure to satisfy even the most discerning sweet tooth.

Perfect occasions to serve this chocolate delight

This double chocolate mousse cake is ideal for festive events such as birthdays, anniversaries or any special occasion requiring a breathtaking dessert. It's also perfect for holiday gatherings or as an elegant finale to a dinner party. The luxurious, rich layers make this a fantastic centerpiece that will attract both compliments and enthusiastic forks at any gathering.

Tips for Perfecting Your Chocolate Mousse Cake

• Preparation of the mousses: Make sure the chocolate melts gently and is mixed well with the cream for an even texture.
• Tips for sponge cake: When making the sponge cake, be sure to whisk the eggs and sugar until pale and fluffy to create a light and airy sponge cake.
• Icing Perfection: For the Rocher glaze, keep the heat low to avoid seizing the chocolate and stir constantly for a smooth finish.

Ingredients:

• For the white chocolate mousse:
  • 200g white chocolate
  • 200 ml hot cream (whipped cream)
  • 100 ml cold cream (whipped cream)
• For the dark chocolate mousse:
  • 200 g dark chocolate
  • 200 ml hot cream (whipped cream)
  • 20g butter
• For the sponge cake:
  • 4 eggs
  • 80 g of sugar
  • 1 vanilla pod or extract
  • 30 ml of oil
  • 45 ml of milk
  • 1 teaspoon of baking powder

• For the Rocher icing:
  • 200g white chocolate
  • 40 ml of oil
  • 40g crushed hazelnuts and almonds

Instructions:

1. Prepare the sponge cake:
   • Beat eggs and sugar until frothy. Add the vanilla, oil and milk, then stir in the sifted flour and baking powder.
   • Pour the batter into a greased baking pan and bake at 180°C (356°F) for about 20-25 minutes. Let cool.
2. Prepare the layers of mousse:
   • White chocolate mousse : Melt the white chocolate with the hot cream, then add it to the cold whipped cream.
   • Dark chocolate mousse: Melt the dark chocolate with the hot cream and butter, then let cool slightly before incorporating it into the whipped cream.
   • Cool the two mousse mixtures separately until set.

3. Assemble the cake:
   • Layer the sponge cake with the dark chocolate mousse, then the white chocolate mousse. Refrigerate for at least an hour.
4. Prepare the Rocher icing:
   • Melt the white chocolate with the oil, add the chopped walnuts and pour over the cooled mousse cake.
5. Final assembly and service:
   • Let the cake set completely in the refrigerator, preferably overnight.
   • Serve chilled, garnished with additional nuts or chocolate shavings if desired.

Enjoy this sumptuous double chocolate mousse cake, a sophisticated dessert that perfectly combines the textures and flavors of chocolate in its many forms.