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Decadent raspberry chocolate mousse cake topped with fresh raspberries and cocoa powder.

Heavenly Raspberry Chocolate Mousse Cake

A luscious dessert combining rich chocolate cake with airy raspberry mousse and silky chocolate ganache, perfect for any celebration.
Prep Time 30 minutes
Cook Time 35 minutes
Total Time 1 hour 5 minutes
Course Dessert
Cuisine American
Servings 12 servings
Calories 450 kcal

Ingredients
  

For the Chocolate Cake

  • 1.75 cups all-purpose flour for a tender, cake-like texture
  • 0.75 cups unsweetened cocoa powder providing a rich, chocolatey flavor
  • 2 cups granulated sugar to balance the bitterness of cocoa
  • 1.5 tsp baking powder to help the cake rise
  • 1.5 tsp baking soda ensuring a soft crumb
  • 1 tsp salt enhancing all flavors
  • 2 large eggs for structure and richness
  • 1 cup whole milk ensuring a moist crumb
  • 0.5 cups vegetable oil adding moisture and tenderness
  • 2 tsp vanilla extract infusing warmth and depth
  • 1 cup boiling water activating cocoa powder for flavor

For the Raspberry Mousse

  • 2 cups fresh raspberries bursting with flavor
  • 0.25 cups granulated sugar to gently sweeten the layer
  • 2 tsp gelatin powder for the mousse structure
  • 2 cups heavy cream for a creamy texture
  • 0.5 cups confectioners sugar smoothing out the sweetness

For the Chocolate Ganache

  • 1 cup semi-sweet chocolate chips for a rich finish
  • 0.5 cups heavy cream creating silky ganache

Instructions
 

Preparation of Chocolate Cake

  • Preheat your oven to 350°F (175°C).
  • In a large mixing bowl, whisk together the flour, cocoa powder, sugar, baking powder, baking soda, and salt.
  • Add the eggs, milk, vegetable oil, and vanilla extract. Mix until smooth.
  • Stir in the boiling water until well combined.
  • Pour the batter into a greased 9x13 inch pan and bake for 30-35 minutes, or until a toothpick comes out clean.
  • Let the cake cool completely in the pan.

Preparation of Raspberry Mousse

  • In a bowl, combine the raspberries with 1/4 cup of granulated sugar and mash gently.
  • Sprinkle gelatin over 2 tablespoons of cold water in a small bowl and let it bloom for about 5 minutes.
  • Heat the gelatin mixture until dissolved, then mix it into the raspberry mixture.
  • In another bowl, whip the heavy cream until soft peaks form, adding confectioners sugar gradually.
  • Gently fold in the raspberry mixture and chill the mousse.

Assembly

  • Once cooled, cut the chocolate cake into two equal layers.
  • Spread a layer of raspberry mousse on the first layer and place the second layer on top.

Preparation of Chocolate Ganache

  • In a saucepan, heat heavy cream until just simmering.
  • Pour it over the chocolate chips in a bowl and let it sit for a few minutes.
  • Whisk until smooth and pour over the assembled cake.

Notes

Use room-temperature ingredients for better emulsification. Ensure the cake fully cools before layering. Use high-quality chocolate for the ganache.
Keyword Celebration Cake, chocolate cake, Ganache, Heavenly Dessert, Raspberry Mousse