This Chocolate Mousse Cake combines a soft chocolate cake base with a rich, creamy chocolate mousse topping for an easy dessert that’s always a crowd favorite.
It is one of those desserts that looks elegant but feels comforting and homemade at the same time. It has a soft baked chocolate cake base and a creamy chocolate mousse layer on top, all made from the same rich chocolate mixture.
It is perfect for special dinner desserts, family gatherings, parties, birthdays, or any occasion where you want something simple but impressive.
The best part is that it is the kind of dessert that makes both kids and adults happy, especially if you decorate it with fresh strawberries, powdered sugar, or chocolate shavings.
Prep Time: 20 minutes
Bake Time: 10 minutes
Chilling Time: 8 hours (or overnight)
Total Time: 8 hours 30 minutes
Servings: 10–12 slices
Ingredients
- 9 oz / 250 g dark cooking chocolate, broken into pieces
- 10½ tablespoons (⅔ cup) / 150 g unsalted butter
- 6 large eggs, separated
- ¾ cup plus 2 tablespoons / 180 g granulated sugar
- ¼ cup / 30 g all-purpose flour, sifted
- A pinch of salt
- Butter, for greasing the pan (or nonstick baking spray)
- Powdered sugar, for dusting (optional)
- Fresh strawberries, washed and dried, for decorating (optional)
Instructions
1. Preheat your oven to 350°F (180°C). Line the bottom of a 10-inch (26 cm) springform pan with parchment paper and lightly grease the bottom and sides with butter or nonstick baking spray.
2. Break the chocolate into pieces and place them in a heatproof bowl with the butter. Melt over a double boiler, stirring occasionally until smooth. Alternatively, melt in the microwave in 20-second intervals (about 1 minute 20 seconds total), stirring between each interval to prevent the chocolate from burning. Set aside to cool slightly.
3. Separate the egg yolks from the egg whites. Place the egg yolks and sugar in a large mixing bowl and beat for several minutes, until pale, thick, and fluffy. Slowly pour the slightly cooled melted chocolate mixture into the egg yolk mixture, mixing continuously. Beat until smooth and fully combined.
4. In a clean bowl, beat the egg whites with a small pinch of salt until stiff peaks form.
5. Gently fold the beaten egg whites into the chocolate mixture in two additions. Use a spatula and fold carefully from the bottom up to keep as much air in the batter as possible. Divide the batter evenly between two bowls.
6. To one half, gently fold in the sifted flour. This will be the baked cake base. Keep the other half without flour covered at room temperature. This will become the mousse layer.
7. Pour the batter with the flour into the prepared springform pan and spread it evenly. Bake in the preheated oven for about 10 minutes, or until the cake layer is just set. Remove from the oven and let it cool completely in the pan on a wire rack, about 1 hour.
8. Once the cake base is completely cool, pour the reserved chocolate mousse mixture without flour over the top.
9. Spread it gently with a spatula into an even layer and cover and refrigerate for several hours, ideally overnight, or for at least 8 hours, until the mousse is firm and set. When ready to serve, carefully remove the cake from the springform pan and transfer it to a serving plate.
10. Wash and dry the strawberries well with paper towels. Cut some strawberries in half, keeping the green tops if you like, and place them around the edge of the cake. Add a few whole strawberries in the center.
11. Dust lightly with powdered sugar, if desired.
Slice and serve well chilled. Enjoy!
Make It Your Own
You can decorate this Chocolate Mousse Cake in different ways depending on the occasion. Fresh strawberries make it look bright and elegant, while chocolate shavings make it extra rich and indulgent. For a simple finish, just dust the top with powdered sugar before serving.
You can also serve it with extra berries, whipped cream, or a few curls of dark chocolate for a more special dessert.
Storage
Store covered in the refrigerator for up to 3 days. Since the mousse contains eggs, keep the cake refrigerated until ready to serve.
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