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Decadent triple chocolate mousse cake with layers of rich chocolate cream
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Triple Chocolate Mousse Cake

A rich and decadent Triple Chocolate Mousse Cake featuring layers of moist chocolate cake and airy chocolate mousse, perfect for chocolate lovers.
Prep Time2 hours
Cook Time25 minutes
Total Time2 hours 25 minutes
Course: Cake, Dessert
Cuisine: Bakery, French
Keyword: Baking, Chocolate Cake, Decadent Dessert, mousse cake, Triple Chocolate Mousse Cake
Servings: 12 servings
Calories: 540kcal

Ingredients

For the cake

  • 1 cup all-purpose flour The foundation that gives structure to your cake.
  • 3/4 cup unsweetened cocoa powder Adds a rich chocolate flavor.
  • 1 1/2 tsp baking powder A leavening agent that helps your cake rise.
  • 1/2 tsp baking soda Works with baking powder for perfect lift.
  • 1/2 tsp salt Enhances sweetness and balances flavors.
  • 1 cup granulated sugar Adds necessary sweetness.
  • 1/2 cup brown sugar Adds moisture and a hint of caramel flavor.
  • 1/2 cup vegetable oil Contributes tenderness.
  • 2 large eggs Bind the ingredients and enrich texture.
  • 1 tsp vanilla extract Elevates the chocolate notes.
  • 3/4 cup buttermilk Adds tangy depth.
  • 1/2 cup hot coffee Enhances chocolate flavor.

For the mousse

  • 1 1/2 cups heavy whipping cream Essential for the mousse.
  • 1 cup semi-sweet chocolate chips Decadent morsels that melt into chocolate.
  • 2 tbsp powdered sugar Perfect for stabilizing whipped cream.
  • 1 cup semi-sweet chocolate chips Extra chocolate for the mousse.

For the ganache and decoration

  • 1/2 cup heavy cream For the smooth chocolate ganache.
  • 1 tbsp unsalted butter Adds sheen and richness to the ganache.
  • to taste Fresh strawberries For topping.
  • to taste Chocolate shavings and curls For decoration.

Instructions

Bake the Chocolate Cake

  • Preheat your oven to 350°F (175°C) and prepare two 9-inch round cake pans by greasing them and lining the bottoms with parchment paper.
  • In a bowl, whisk together the all-purpose flour, unsweetened cocoa powder, baking powder, baking soda, and salt.
  • In another bowl, combine the granulated sugar, brown sugar, vegetable oil, eggs, vanilla extract, and buttermilk. Whisk until smooth and gradually mix in the dry ingredients.
  • Pour in the hot coffee and mix until well combined. Divide the batter between the cake pans and bake for 20-25 minutes, or until a toothpick comes out clean.
  • Let the layers cool completely on a wire rack.

Prepare the Chocolate Mousse

  • In a saucepan, heat 1 cup of heavy cream until warm, then pour it over 1 cup of semi-sweet chocolate chips. Let sit for 2 minutes and stir until smooth.
  • Let the chocolate mixture 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 chocolate mixture.

Assemble the Cake

  • Place one cooled cake layer on your serving plate and spread chocolate mousse over it.
  • Place the second cake layer on top and press down gently. Refrigerate for 30 minutes.

Make the Ganache & Decorate

  • Heat 1/2 cup of heavy cream, then pour it over the remaining chocolate chips and 1 tablespoon of unsalted butter. Stir until smooth.
  • Pour the ganache over the chilled cake and decorate with fresh strawberries and chocolate shavings.

Chill & Serve

  • Refrigerate the cake for at least 1 hour before slicing to allow flavors to meld.

Notes

Ensure ingredients are at room temperature for a smooth batter. Chill the cake adequately before serving to allow flavors to meld beautifully.