Raspberry Chocolate Mousse Cake (Printable)
Layered chocolate cake with silky mousse, raspberry filling, and glossy ganache. French-inspired dessert.
# What You'll Need:
→ Chocolate Cake Base
01 - 1 cup all-purpose flour
02 - 1/3 cup unsweetened cocoa powder
03 - 1 teaspoon baking powder
04 - 1/4 teaspoon salt
05 - 1/2 cup granulated sugar
06 - 2 large eggs
07 - 1/4 cup vegetable oil
08 - 1/2 cup whole milk
09 - 1 teaspoon vanilla extract
→ Chocolate Mousse Filling
10 - 7 ounces dark chocolate (60–70% cocoa), chopped
11 - 3 large eggs, separated
12 - 1 pinch salt
13 - 3 tablespoons granulated sugar
14 - 1 cup heavy cream, cold
→ Raspberry Layer
15 - 8.8 ounces fresh raspberries
16 - 3 tablespoons granulated sugar
17 - 1 tablespoon fresh lemon juice
18 - 1 scant teaspoon powdered gelatin
19 - 2 tablespoons cold water
→ Ganache and Garnish
20 - 3.5 ounces dark chocolate, finely chopped
21 - scant 1/2 cup heavy cream
22 - Fresh raspberries and chocolate shavings for garnish
# Directions:
01 - Preheat the oven to 350°F. Grease a 9-inch springform pan and line the base with parchment paper.
02 - Sift together the flour, cocoa powder, baking powder, and salt into a bowl. In a separate bowl, whisk the sugar, eggs, vegetable oil, milk, and vanilla extract until smooth. Gradually fold the dry ingredients into the wet mixture, stirring until just combined. Pour the batter into the prepared pan and bake for 20–25 minutes until set. Allow the cake to cool completely in the pan.
03 - Sprinkle the gelatin over cold water and let it soften for 5 minutes. In a saucepan, combine the raspberries, sugar, and lemon juice over medium heat. Mash the berries and simmer for 5–8 minutes. Remove from heat and stir in the softened gelatin until fully dissolved. Let the mixture cool to room temperature.
04 - Melt the dark chocolate over a double boiler or in the microwave until smooth, then let it cool slightly. Beat the egg whites with a pinch of salt to soft peaks, then gradually add the sugar while beating to stiff peaks. In a separate bowl, whip the cold heavy cream to soft peaks. Stir the egg yolks into the cooled chocolate, gently fold in the whipped cream, then carefully fold in the beaten egg whites.
05 - Spread the raspberry mixture evenly over the cooled cake base in the springform pan. Chill for 15 minutes to allow it to partially set. Gently spread the chocolate mousse over the raspberry layer, smoothing the top. Refrigerate for at least 2 hours, or overnight, until fully set.
06 - Heat the cream just until steaming and pour it over the chopped chocolate. Let it sit for 2 minutes, then stir until glossy and smooth. Cool slightly, then pour the ganache over the chilled mousse cake. Refrigerate for 30 minutes.
07 - Decorate with fresh raspberries and chocolate shavings just before serving. Carefully remove the springform ring and slice with a hot knife for clean portions.
# Expert Advice:
01 -
- That moment when you cut into it and see four distinct, jewel toned layers is honestly worth every minute of effort.
- The raspberry layer cuts through the richness of the chocolate in a way that keeps people coming back for a second slice before finishing the first.
- It looks like something from a Parisian patisserie but the components are surprisingly manageable if you take them one at a time.
02 -
- The mousse deflates if you overmix when folding in the egg whites, so use a spatula and stop while you still see a few white streaks.
- Gelatin that has not fully bloomed will leave you with a raspberry layer that weeps instead of sets, so give it the full five minutes in cold water first.
- A hot knife dipped in warm water and wiped dry between cuts is the only way to get those clean, bakery style slices.
03 -
- Taste your raspberries before adding the full amount of sugar, because a particularly sweet batch needs less than you think.
- Letting the chocolate cool to just above body temperature before folding in the cream and whites prevents the mousse from turning grainy.