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Decadent Flourless Chocolate Mousse Cake

A slice of rich chocolate mousse cake resting next to the main cake on a white plate, dusted heavily with cocoa powder.
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This recipe creates a rich, layered chocolate mousse cake featuring a moist, flourless base and a light, stable dark chocolate mousse topping. It is an impressive centerpiece dessert.

Ingredients

Scale
  • For the Flourless Base: 8 ounces bittersweet chocolate (70% cacao), chopped
  • 1/2 cup (1 stick) unsalted butter
  • 3 large eggs, separated
  • 1/4 cup granulated sugar
  • 1 teaspoon vanilla extract
  • Pinch of salt
  • For the Dark Chocolate Mousse: 10 ounces dark chocolate (60-70% cacao), finely chopped
  • 1 1/2 cups heavy cream, divided
  • 2 large egg yolks
  • 2 tablespoons granulated sugar
  • 1 teaspoon vanilla extract
  • 1 1/2 teaspoons unflavored gelatin powder
  • 3 tablespoons cold water
  • For Garnish: Cocoa powder or chocolate shavings

Instructions

  1. Prepare the Base: Preheat your oven to 350°F (175°C). Grease and line the bottom of an 8-inch springform pan with parchment paper.
  2. Melt the chocolate and butter together in a heatproof bowl set over simmering water, stirring until smooth. Remove from heat and let cool slightly.
  3. In a separate bowl, whisk the egg yolks and 1/4 cup sugar until pale. Stir the melted chocolate mixture and vanilla into the yolks.
  4. In a clean bowl, beat the egg whites with a pinch of salt until stiff peaks form. Gently fold one-third of the egg whites into the chocolate mixture to lighten it, then fold in the remaining egg whites until just combined. Do not overmix.
  5. Pour the batter into the prepared pan. Bake for 20 to 25 minutes, or until the edges are set but the center still has a slight wobble. Cool completely on a wire rack.
  6. Prepare the Mousse: Sprinkle the gelatin powder over the cold water in a small bowl and let it bloom for 5 minutes.
  7. Place the finely chopped dark chocolate in a medium bowl. Heat 1/2 cup of the heavy cream in a small saucepan until it just simmers. Pour the hot cream over the chocolate and let it sit for 2 minutes, then whisk until smooth.
  8. Gently warm the bloomed gelatin until it is liquid, but do not boil. Whisk the liquid gelatin into the chocolate mixture. Whisk in the egg yolks, 2 tablespoons sugar, and vanilla extract. Let this mixture cool to room temperature, stirring occasionally.
  9. In a separate bowl, whip the remaining 1 cup of heavy cream until medium peaks form.
  10. Gently fold the whipped cream into the cooled chocolate mixture in three additions until you have a uniform, creamy mousse.
  11. Assemble the Cake: Once the base is completely cool, spread the chocolate mousse evenly over the top of the flourless base in the springform pan.
  12. Refrigerate the cake for at least 6 hours, or preferably overnight, until the mousse is firm and set.
  13. Before serving, carefully release the springform side. Dust the top with cocoa powder or decorate with chocolate shavings. Slice and serve this rich chocolate dessert.

Notes

  • To make a stable chocolate mousse, ensure your melted chocolate mixture is cooled to room temperature before folding in the whipped cream. If it is too warm, the mousse will deflate.
  • If you prefer a no bake mousse cake, you can use a pre-made, thin, moist chocolate sponge base instead of baking the flourless layer.
  • For an extra luxurious flavor, use high-quality French chocolate.

Nutrition

Find it online: https://juliameal.com/chocolate-mousse-cake-recipe-decadent/