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Delicious triple chocolate mousse cake with layers of rich chocolate.
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Triple Chocolate Mousse Cake

A heavenly creation with layers of rich chocolate cake, velvety chocolate mousse, and glossy ganache, perfect for any occasion.
Prep Time1 hour
Cook Time25 minutes
Total Time1 hour 30 minutes
Course: Cake, Dessert
Cuisine: French
Keyword: Chocolate Cake, Decadent Dessert, Homemade Cake, Indulgent Treat, mousse cake
Servings: 8 servings
Calories: 480kcal

Ingredients

For the Chocolate Cake

  • 1 cup all-purpose flour Offers the perfect backbone for the cake’s structure.
  • 3/4 cup unsweetened cocoa powder Adds a deep, dark chocolate flavor.
  • 1 1/2 tsp baking powder Ensures a light and fluffy cake.
  • 1/2 tsp baking soda Works with baking powder for ideal rise.
  • 1/2 tsp salt Balances sweetness to enhance flavor.
  • 1 cup granulated sugar Infuses sweetness and helps create a tender crumb.
  • 1/2 cup brown sugar Adds moisture and caramel richness.
  • 1/2 cup vegetable oil Imparts moisture for a luscious cake.
  • 2 large eggs Binds ingredients and enriches flavor.
  • 1 tsp vanilla extract Adds warmth and enhances aroma.
  • 3/4 cup buttermilk Provides delightful tenderness.
  • 1/2 cup hot coffee Intensifies chocolate flavor.

For the Chocolate Mousse

  • 1 1/2 cups heavy whipping cream Star ingredient for dreamlike texture.
  • 1 cup semi-sweet chocolate chips Brings creaminess to the mousse.
  • 2 tbsp powdered sugar Sweetens the whipped cream for mousse.

For the Ganache

  • 1 cup semi-sweet chocolate chips Creates an indulgent glossy topping.
  • 1/2 cup heavy cream Provides luxurious mouthfeel.
  • 1 tbsp unsalted butter Adds shine and richness.

For Garnish

  • Fresh strawberries Adds a burst of freshness.
  • Chocolate shavings Enhances the chocolate experience.
  • Chocolate curls Makes the cake enticing.

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 mixing bowl, whisk together flour, cocoa powder, baking powder, baking soda, and salt.
  • In another bowl, mix sugar, brown sugar, vegetable oil, eggs, vanilla extract, and buttermilk until smooth.
  • Gradually add dry ingredients and mix gently. Slowly pour in hot coffee and stir until smooth.
  • Evenly divide batter into pans and bake for 20-25 minutes. Cool in pans on wire rack.

Prepare the Chocolate Mousse

  • Heat 1 cup heavy cream until warm in a saucepan; pour over 1 cup chocolate chips and let sit for 2 minutes.
  • Stir until smooth and set aside to cool.
  • Whip the remaining 1/2 cup heavy cream with powdered sugar until stiff peaks form.
  • Fold whipped cream gently into cooled chocolate until fully incorporated.

Assemble the Cake

  • Place one cake layer on a serving plate and spread a layer of chocolate mousse on top.
  • Place the second cake layer on top and refrigerate for 30 minutes.

Make the Ganache & Decorate

  • Heat the remaining 1/2 cup of heavy cream and pour over 1 cup chocolate chips and butter.
  • Stir until smooth and pour ganache over the chilled cake, allowing it to drizzle down.
  • Garnish with strawberries, chocolate shavings, and curls.

Chill & Serve

  • Refrigerate the cake for at least 1 hour before slicing.
  • Serve and enjoy each rich and decadent bite.

Notes

Use room temperature ingredients for optimal mixing. Allow layers to chill before serving for the best presentation.