Go Back

Heavenly Raspberry Chocolate Mousse Cake

A decadent dessert featuring rich chocolate cake layered with raspberry mousse and chocolate ganache, perfect for any celebration.
Prep Time30 minutes
Cook Time30 minutes
Total Time2 hours 30 minutes
Course: Dessert
Cuisine: American
Keyword: celebration cake, Chocolate Mousse, Dessert Recipe, Raspberry Cake
Servings: 12 servings
Calories: 450kcal

Ingredients

For the Cake

  • 1 cup all-purpose flour The foundation for our moist and fluffy cake.
  • 1 cup granulated sugar Sweetness to balance the dark cocoa.
  • 1/2 cup unsweetened cocoa powder Rich flavor that makes the cake sinful.
  • 1 teaspoon baking powder For that perfect rise.
  • 1/2 teaspoon baking soda Aiding in the cake's tenderness.
  • 1/4 teaspoon salt Elevating all the flavors.
  • 1/2 cup vegetable oil Ensures the cake remains moist and delicious.
  • 2 large eggs Binding the ingredients together.
  • 1 cup buttermilk Adds a creamy tang that enhances flavor.
  • 1 teaspoon vanilla extract A hint of warmth and aroma to the cake.

For the Raspberry Mousse

  • 1 cup fresh or frozen raspberries Juicy bursts of flavor throughout the mousse.
  • 1/4 cup granulated sugar To sweeten the tartness of the raspberries.
  • 1 teaspoon lemon juice Brightening the raspberry's natural flavor.
  • 1 cup heavy cream Essential for a dreamy mousse texture.
  • 1 tablespoon powdered sugar For sweetness in the whipped cream.
  • 1 tablespoon unflavored gelatin Helping the mousse set perfectly.
  • 2 tablespoons water To dissolve the gelatin.

For the Ganache

  • 1 cup heavy cream Adds richness.
  • 8 oz semisweet chocolate, chopped Provides the signature chocolate taste.
  • 1 teaspoon vanilla extract Adding depth to the chocolate flavor.

Instructions

Preparation

  • Preheat your oven to 350°F (175°C). Grease and flour an 8-inch round cake pan.
  • In a medium bowl, whisk together the all-purpose flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt.
  • In a separate bowl, combine the vegetable oil, eggs, buttermilk, and vanilla extract. Mix well until fully blended.
  • Gradually add the wet mixture to the dry ingredients, stirring until just combined.
  • Pour the batter into the prepared pan and bake for 25-30 minutes. Allow the cake to cool completely in the pan.

Making the Mousse

  • In a saucepan, combine the raspberries, 1/4 cup granulated sugar, and lemon juice. Cook over medium heat until thickened and strain the mixture.
  • In a small bowl, sprinkle the gelatin over the water and let sit for 5 minutes. Microwave briefly until dissolved, then stir into the raspberry puree.
  • In a large bowl, whip the heavy cream and powdered sugar until stiff peaks form. Gently fold in the cooled raspberry mixture.

Assembling

  • Heat 1 cup of heavy cream in a saucepan until it simmers, then add the chopped chocolate and stir until smooth.
  • Place the cooled chocolate cake layer on a serving plate. Spread the raspberry mousse evenly over the cake and refrigerate for at least 2 hours.
  • Once the mousse is set, pour the chocolate ganache over it, spreading it evenly.
  • Refrigerate the assembled cake for another hour before serving.

Notes

For best results, use room temperature ingredients. You can bake the cake a day ahead and assemble it the following day. Feel free to switch up the fruit in the mousse for variations.