Introduction

This Chocolate Mousse Cake combines a moist chocolate cake base with a rich and airy chocolate mousse topping. It’s an elegant dessert that’s surprisingly easy to make at home and perfect for special occasions or an indulgent treat.

Chocolate Mousse Cake Recipe - Recipe Image

Ingredients

1 cup all-purpose flour
1 cup granulated sugar
1/2 cup unsweetened cocoa powder
1 teaspoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1/2 cup unsalted butter (melted)
2 large eggs
1 teaspoon vanilla extract
1/2 cup buttermilk
8 oz semi-sweet chocolate (chopped)
2 tablespoons unsalted butter
3 large eggs (separated)
1/4 cup granulated sugar
1 cup heavy cream
1 teaspoon vanilla extract
Pinch of salt
Whipped cream (for garnish)
Chocolate shavings or cocoa powder (for garnish)
Fresh berries (optional for garnish)

Instructions

Step 1: Preheat your oven to 350°F (175°C). Grease and flour an 8-inch round cake pan. In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt. In another bowl, mix the melted butter, eggs, vanilla extract, and buttermilk until well combined. Gradually add the wet ingredients to the dry ingredients, stirring until just combined. Pour the batter into the prepared cake pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean. Let it cool in the pan for about 10 minutes, then transfer to a wire rack to cool completely.
Step 2: In a heatproof bowl over simmering water, melt the chopped chocolate and butter together, stirring until smooth. Remove from heat and let cool slightly. In a separate bowl, whisk the egg yolks and sugar together until pale and fluffy. Gradually add the melted chocolate mixture to the egg yolks, stirring until well combined. In another clean bowl, beat the egg whites with a pinch of salt until stiff peaks form. In a separate bowl, whip the heavy cream and vanilla extract until soft peaks form. Gently fold the whipped egg whites into the chocolate mixture, followed by the whipped cream, until no streaks remain.
Step 3: Once the chocolate cake has cooled completely, slice it in half horizontally to create two layers. Place one layer of cake on a serving plate. Spread half of the chocolate mousse over the top. Place the second layer of cake on top and spread the remaining mousse over the top and sides of the cake. Refrigerate the cake for at least 2 hours to allow the mousse to set.
Step 4: Before serving, garnish with whipped cream, chocolate shavings or cocoa powder, and fresh berries if desired. Slice and serve the Chocolate Mousse Cake chilled for a rich and delightful dessert experience.

Tips & Variations

Use high-quality semi-sweet chocolate for the best mousse flavor.
To make buttermilk at home, add 1 tablespoon lemon juice or vinegar to 1/2 cup milk and let sit for 5 minutes.
For a nutty twist, sprinkle chopped toasted hazelnuts or almonds between mousse layers.
Ensure egg whites are beaten until stiff peaks form for a light and airy mousse texture.

Storage

Store the cake covered in the refrigerator for up to 3 days. Keep it chilled to maintain the mousse’s texture. To serve, slice and enjoy cold or let sit at room temperature for 10 minutes for a softer mousse. Avoid freezing as the texture may change.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this cake ahead of time?

Yes, this cake can be prepared a day in advance. Refrigerate it well-covered and it will stay fresh and delicious, allowing flavors to meld beautifully.

Is it safe to use raw eggs in the mousse?

This recipe uses raw eggs, so it’s important to use fresh, high-quality eggs and practice good food safety. Alternatively, you can use pasteurized eggs to reduce any risk.

Chocolate Mousse Cake Recipe

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★★★★★

4.8 from 65 reviews

This decadent Chocolate Mousse Cake combines a rich, moist chocolate cake base with a smooth and airy chocolate mousse topping. Perfect for special occasions or indulgent desserts, this recipe walks you through baking a classic chocolate cake and preparing a luscious mousse before assembling and chilling to perfection.

Author: Marco
Prep Time: 30 minutes
Cook Time: 30 minutes
Total Time: 1 hour
Yield: 8 servings 1x
Category: Dessert
Method: Baking
Cuisine: American

Ingredients

Scale

For the Chocolate Cake:

1 cup all-purpose flour
1 cup granulated sugar
1/2 cup unsweetened cocoa powder
1 teaspoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1/2 cup unsalted butter (melted)
2 large eggs
1 teaspoon vanilla extract
1/2 cup buttermilk

For the Chocolate Mousse:

8 oz semi-sweet chocolate (chopped)
2 tablespoons unsalted butter
3 large eggs (separated)
1/4 cup granulated sugar
1 cup heavy cream
1 teaspoon vanilla extract
Pinch of salt

For Garnish:

Whipped cream
Chocolate shavings or cocoa powder
Fresh berries (optional)

Instructions

Bake the Chocolate Cake: Preheat your oven to 350°F (175°C). Grease and flour an 8-inch round cake pan. In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt. In another bowl, mix the melted butter, eggs, vanilla extract, and buttermilk until well combined. Gradually add the wet ingredients to the dry ingredients, stirring until just combined. Pour the batter into the prepared cake pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean. Let it cool in the pan for about 10 minutes, then transfer to a wire rack to cool completely.
Prepare the Chocolate Mousse: In a heatproof bowl over simmering water, melt the chopped chocolate and butter together, stirring until smooth. Remove from heat and let cool slightly. In a separate bowl, whisk the egg yolks and sugar together until pale and fluffy. Gradually add the melted chocolate mixture to the egg yolks, stirring until well combined. In another clean bowl, beat the egg whites with a pinch of salt until stiff peaks form. In a separate bowl, whip the heavy cream and vanilla extract until soft peaks form. Gently fold the whipped egg whites into the chocolate mixture, followed by the whipped cream, until no streaks remain.
Assemble the Cake: Once the chocolate cake has cooled completely, slice it in half horizontally to create two layers. Place one layer of cake on a serving plate. Spread half of the chocolate mousse over the top. Place the second layer of cake on top and spread the remaining mousse over the top and sides of the cake. Refrigerate the cake for at least 2 hours to allow the mousse to set.
Serve: Before serving, garnish with whipped cream, chocolate shavings or cocoa powder, and fresh berries if desired. Slice and serve the Chocolate Mousse Cake chilled for a rich and delightful dessert experience!

Notes

Ensure the cake is completely cooled before slicing and adding mousse to prevent melting.
Use room temperature eggs for easier whipping and better volume.
For a more intense chocolate flavor, use high-quality semi-sweet chocolate.
Refrigerate the assembled cake for at least 2 hours, but overnight chilling enhances texture.
Fresh berries add a pleasant tart contrast but are optional.
When folding in whipped egg whites and cream, do so gently to maintain the mousse’s lightness.

Keywords: Chocolate mousse cake, chocolate cake recipe, chocolate mousse, layered cake, dessert, rich chocolate dessert