Raspberry Chocolate Mousse Cake (Printable)
Decadent layered chocolate cake with silky mousse, raspberry filling, and glossy ganache topping.
# What You'll Need:
→ Chocolate Cake Layer
01 - 1 cup all-purpose flour
02 - 1/3 cup unsweetened cocoa powder
03 - 1 tsp baking powder
04 - 1/4 tsp 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 tsp vanilla extract
→ Chocolate Mousse
10 - 7 oz dark chocolate (60–70% cocoa), chopped
11 - 3 large eggs, separated
12 - 1 pinch salt
13 - 3 tbsp granulated sugar
14 - 1 cup heavy cream, cold
→ Raspberry Layer
15 - 2 cups fresh raspberries
16 - 3 tbsp granulated sugar
17 - 1 tbsp lemon juice
18 - 1 1/2 tsp powdered gelatin
19 - 2 tbsp cold water
→ Chocolate Ganache & Garnish
20 - 3.5 oz dark chocolate, chopped
21 - 1/3 cup heavy cream
22 - Fresh raspberries and chocolate shavings for garnish
# Step-by-step:
01 - Preheat oven to 350°F. Grease a 9-inch springform pan and line the base with parchment paper.
02 - Sift together flour, cocoa powder, baking powder, and salt into a bowl. In a separate bowl, whisk sugar, eggs, oil, milk, and vanilla extract until smooth. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
03 - Pour batter into the prepared springform pan and bake for 20–25 minutes until set. Allow the cake to cool completely in the pan.
04 - Soften gelatin in cold water for 5 minutes. Combine raspberries, sugar, and lemon juice in a saucepan 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 cool to room temperature.
05 - Melt dark chocolate using a double boiler or microwave until smooth, then let cool slightly. Beat egg whites with a pinch of salt to soft peaks, then gradually add sugar while beating to stiff peaks. In another bowl, whip the cold heavy cream to soft peaks. Stir egg yolks into the melted chocolate, gently fold in the whipped cream, then carefully fold in the beaten egg whites.
06 - Spread the raspberry layer evenly over the cooled cake in the pan. Chill for 15 minutes until slightly set. Gently spread the chocolate mousse over the raspberry layer and smooth the top. Refrigerate for at least 2 hours or overnight until fully set.
07 - Heat heavy cream until steaming and pour over the chopped chocolate. Let sit for 2 minutes, then stir until glossy and smooth. Cool slightly, then pour evenly over the chilled mousse cake. Refrigerate for 30 minutes.
08 - Garnish with fresh raspberries and chocolate shavings. Carefully remove the springform ring and slice with a hot knife for clean portions.
# Expert Advice:
01 -
- The raspberry layer cuts right through the richness of the chocolate in a way that makes people close their eyes when they take the first bite.
- It looks wildly impressive but the components are surprisingly manageable when you break them down into separate afternoons of work.
- That ganache drip over the top makes everyone think you bought it from a patisserie even if your mousse is slightly uneven underneath.
02 -
- The mousse will deflate if you overmix when folding in the egg whites, so use a large spatula and fold with slow, confident sweeps from the bottom of the bowl.
- The raspberry layer must cool to room temperature before it goes on the cake or it will melt into the mousse and create a muddy mess instead of a clean band of fruit.
- Gelatin that has not fully bloomed will leave rubbery lumps in your raspberry layer, so give it the full five minutes in cold water before adding it to the warm fruit.
03 -
- Chill your mixing bowl and whisk attachment in the freezer for ten minutes before whipping the cream because cold equipment whips faster and holds its shape longer.
- Let the ganache cool until it coats the back of a spoon before pouring it over the cake, otherwise it will cascade right off the edges and pool at the base.