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Delicious triple chocolate mousse cake layered with rich chocolate flavors.
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Triple Chocolate Mousse Cake

A decadent dessert featuring layers of fluffy chocolate cake, silky mousses, and rich ganache, perfect for any special occasion.
Prep Time2 hours
Cook Time25 minutes
Total Time2 hours 25 minutes
Course: Cake, Dessert
Cuisine: American, French
Keyword: Chocolate Dessert, Decadent Cake, mousse cake, Special Occasion Cake, Triple Chocolate Cake
Servings: 10 servings
Calories: 450kcal

Ingredients

Chocolate Cake Ingredients

  • 1 cup all-purpose flour The foundation of your cake, providing a soft texture.
  • 3/4 cup unsweetened cocoa powder Adds a rich, deep chocolate flavor.
  • 1.5 tsp baking powder Ensures a light and airy crumb.
  • 1/2 tsp baking soda Enhances the leavening action.
  • 1/2 tsp salt Balances the sweetness.
  • 1 cup granulated sugar Sweetens the cake.
  • 1/2 cup brown sugar Adds moisture and a hint of caramel-like sweetness.
  • 1/2 cup vegetable oil Keeps the cake tender and moist.
  • 2 large eggs Binds the ingredients together.
  • 1 tsp vanilla extract Enhances overall flavor.
  • 3/4 cup buttermilk Adds tangy richness and moisture.
  • 1/2 cup hot coffee or hot water Deepens the chocolate flavor.

Chocolate Mousse Ingredients

  • 1.5 cups heavy whipping cream The base for the creamy mousse layers.
  • 1 cup semi-sweet chocolate chips Forms the heart of the mousse.
  • 2 tbsp powdered sugar Sweetens the whipped cream.

Ganache Ingredients

  • 1/2 cup heavy cream Used for the ganache.
  • 1 tbsp unsalted butter Adds a silky mouthfeel.

Garnish

  • Fresh strawberries, chocolate shavings, and chocolate curls Elevate aesthetics and flavor.

Instructions

Bake the Chocolate Cake

  • Preheat your oven to 350°F (175°C). Grease and line two 9-inch round cake pans with parchment paper.
  • In a large bowl, whisk together the all-purpose flour, cocoa powder, baking powder, baking soda, and salt.
  • In another bowl, combine the granulated sugar, brown sugar, vegetable oil, eggs, vanilla extract, and buttermilk, whisking until smooth.
  • Gradually mix in the dry ingredients until a thick batter forms. Slowly pour in hot coffee, stirring gently. Divide the batter between the pans and bake for 20-25 minutes.
  • Once done, let them cool completely on a wire rack.

Prepare the Chocolate Mousse

  • In a saucepan, heat 1 cup of heavy cream until warm. Pour it over the chocolate chips and let sit for 2 minutes.
  • Stir until smooth, then cool to room temperature.
  • In a separate bowl, whip the remaining 1/2 cup of heavy cream with powdered sugar until stiff peaks form.
  • Gently fold the whipped cream into the cooled chocolate mixture.

Assemble the Cake

  • Place one cooled chocolate cake layer on a serving plate and spread the chocolate mousse evenly over the top.
  • Add the second cake layer, chill for at least 30 minutes.

Make the Ganache & Decorate

  • Heat heavy cream until warm, then pour it over the chocolate chips and unsalted butter. Stir until smooth.
  • Pour the ganache over the chilled cake and garnish with strawberries, chocolate shavings, and curls.

Chill & Serve

  • Refrigerate for at least an hour before slicing and serving.

Notes

Measure ingredients accurately and use room temperature dairy. Patience during chilling is key for the best texture.