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Easy Chocolate Mousse Cake

This Easy Chocolate Mousse Cake is a decadent treat perfect for chocolate lovers, featuring rich layers of chocolate cake and airy mousse, ideal for any special occasion.
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Prep Time 40 minutes
Cook Time 30 minutes
Total Time 3 hours 30 minutes
Servings: 12 servings
Course: Cake, Dessert
Cuisine: American
Calories: 450
Ingredients Method Notes

Ingredients
  

For the chocolate cake
  • 1 ¾ cups All-purpose flour (Sifted)
  • 2 cups Granulated sugar
  • ¾ cup Unsweetened cocoa powder (High-quality)
  • 2 tsp Baking powder
  • 1 ½ tsp Baking soda
  • 1 tsp Salt
  • 2 large Eggs (Room temperature)
  • ½ cup Vegetable oil (Neutral-flavored)
  • 1 cup Buttermilk (Room temperature)
  • 1 cup Hot coffee (Enhances chocolate flavor)
For the mousse
  • 8 oz Semisweet chocolate (Melted and cooled)
  • 2 cups Heavy whipping cream (Cold)
  • 1 tbsp Powdered sugar
  • 1 tsp Vanilla extract
  • 1 tsp Unflavored gelatin (Optional stabilizer)
For the ganache
  • 6 oz Bittersweet chocolate (Finely chopped)
  • ¾ cup Heavy cream (Heated)
  • 1 tbsp Light corn syrup (For shine)
  • 1 tbsp Butter (Room temperature)

Method
 

Preparation of the cake
  1. Set the oven to 350°F (175°C). Prepare your cake pans by greasing them.
  2. In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.
  3. In another bowl, beat the eggs, vegetable oil, buttermilk, and hot coffee together until well mixed.
  4. Pour the wet ingredients into the dry ingredients. Blend until smooth.
  5. Divide the batter evenly between the prepared pans. Bake for 25–30 minutes or until a toothpick comes out clean. Cool the cakes completely.
Preparation of the mousse
  1. For the mousse, gently melt the semisweet chocolate and let it cool slightly.
  2. In a separate bowl, beat the heavy whipping cream, powdered sugar, and vanilla extract until you reach stiff peaks.
  3. Fold the melted chocolate into the whipped cream gently until well combined.
  4. Place one layer of the cooled cake in a springform pan. Spoon half of the mousse over it. Add the second layer of cake, then top with the remaining mousse.
  5. Refrigerate for at least 3 hours until set.
Preparation of the ganache
  1. To make the ganache, heat the heavy cream and pour it over the finely chopped bittersweet chocolate. Stir until smooth.
  2. Add light corn syrup and butter for shine.
Assembly and Serving
  1. Spread the ganache over the chilled mousse cake.
  2. Slice and serve using a hot knife for clean edges.

Notes

Serve the Easy Chocolate Mousse Cake chilled and garnish with chocolate shavings or fresh berries. Store any leftovers in the refrigerator for up to 3 days. Ensure all ingredients are at room temperature for better mixing and use high-quality chocolate for flavor.