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Chocolate Mousse Cake [Recipe]

easy recipe for chocolate mousse cake
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There’s nothing quite like the joy of baking something that brings smiles all around, and this Chocolate Mousse Cake is one of my all-time favorites to make! Whenever chocolate-loving friends visit, this cake is my go-to, and it’s always a hit with the kids too. The cake layer is soft and moist, while the mousse is light and airy, just like a cloud. Whether it’s a special occasion or just a sweet end to a family dinner, this cake makes each moment a little more magical.

Why Will You Love this Recipe?

  • Decadently Delicious: The rich chocolate mousse paired with the tender cake creates a luxurious texture and taste that melts in your mouth. It’s a perfect balance of sweetness and chocolatey depth that appeals to all ages.
  • Surprisingly Simple: Despite its impressive layers, this cake is quite straightforward to prepare. The steps are easy to follow, making it a great recipe for bakers of any skill level.
  • Perfect for Any Occasion: Whether it’s a birthday, holiday, or just a casual gathering, this cake is versatile enough to fit any event. It’s guaranteed to be the centerpiece of your dessert table.

Here are the step-by-step photos.

making of cake for chocolate mousse cake
chocolate mousse step by step photos
chocolate ganache step by step photos

Recipe Variations

  • White Chocolate Mousse: For a sweeter twist, replace the milk chocolate with white chocolate. It’s a lovely contrast both in flavor and color. In that case, use three times more white chocolate than the recipe says for milk chocolate.
  • Add a Crunch: Mix in some crushed hazelnuts or almonds into the mousse layer for an added texture that complements the smooth chocolate.
  • Coffee Infused: Introduce a shot of espresso into the mousse mixture to enhance the chocolate flavor with a subtle coffee aroma, making it irresistible to coffee lovers.
chocolate mousse cake

Tools You’ll Need

  • Electric Mixer: Essential for whipping up the mousse and ganache to the right consistency.
  • Deep Dish like the casserole one.
  • Double Boiler: Ideal for melting chocolate smoothly without burning it. If you don’t have one, a heatproof bowl over a pot of simmering water works just as well.
  • Set of Measuring Cups and Spoons
  • Spatula and Whisk: A spatula is perfect for folding the chocolate into the whipped cream, and a whisk is crucial for getting the cake batter just right.

Other Recipes You’ll Love

chocolate mousse cake recipe

Chocolate Mousse Cake

Author: Laura Bais
I hope you fall in love with this Chocolate Mousse Cake just as much as I have. Happy baking!
No ratings yet
Prep Time 40 minutes
Cook Time 20 minutes
Cooling 5 hours
Total Time 6 hours
Course Dessert
Cuisine American, European
Servings 24 slices



  • 3/4 cup sugar
  • 2 eggs
  • 1 teaspoon vanilla extract
  • 1/4 cup oil
  • 1 cup all-purpose flour
  • Pinch of salt
  • 1/4 cup cocoa powder
  • 1 teaspoon baking powder
  • 1/2 cup boiling water

Milk Chocolate Mousse:

  • 1/3 ounce powdered gelatin
  • 1/4 cup water for gelatin
  • 1/2 cup milk
  • 18 ounces milk chocolate
  • Pinch of salt
  • 18 ounces heavy cream

Dark Chocolate Ganache:

  • 5.3 ounces dark chocolate
  • Pinch of salt
  • 7 ounces heavy cream



  • Beat eggs and sugar until fluffy (about 2 minutes).
  • Mix in oil and vanilla. Gradually add sifted dry ingredients.
  • Finally, gently fold in boiling water.
  • Pour into a buttered pan. Bake at 350 °F for about 20 minutes.

Milk Chocolate Mousse

  • Mix gelatin with water and let it swell (about 10 minutes).
  • Heat milk, dissolve swollen gelatin in it, then pour over chocolate mixed with a pinch of salt. Stir until melted, use a double boiler if needed.
  • Whip heavy cream to soft peaks, then fold in melted chocolate gradually.
  • Pour mousse over cooled cake, refrigerate for at least 30 minutes to set.

Dark Chocolate Ganache

  • Salt the dark chocolate, pour over hot heavy cream, and stir until smooth.
  • Pour over set mousse. Refrigerate for 3-4 hours before serving. Enjoy!
Keyword chocolate cake, chocolate mousse
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