Easy Chocolate Mousse Cake Recipe

Introduction

This Easy Chocolate Mousse Cake combines a moist chocolate cake base with a rich, creamy chocolate mousse topping. Finished with a glossy ganache and fresh raspberries, it’s a stunning dessert that’s surprisingly simple to make at home.

Ingredients

• 1 Cup (133g) all purpose flour
• 3/4 Cup (150g) granulated sugar
• 1/3 Cup (30g) unsweetened natural cocoa powder
• 1 tsp baking soda
• 1/2 tsp baking powder
• 1/4 tsp salt
• 1/4 Cup (60ml) vegetable oil
• 1 large egg, room temperature
• 1 tsp pure vanilla extract
• 1/2 Cup (120ml) full-fat buttermilk*, room temperature
• 1/2 Cup (120ml) hot coffee or hot water
• 2 Cups (370g) semi-sweet chocolate chips
• 2 1/3 Cups (560ml) heavy whipping cream, divided
• 2 Tbsp powdered sugar
• 2 tsp pure vanilla extract
• 1 tsp instant coffee or espresso powder (optional)
• 1/2 Cup (93g) semi-sweet chocolate chips (for ganache)
• 1/2 Cup (120ml) heavy whipping cream (for ganache)
• 3 Oz fresh raspberries
• 2 Oz chocolate covered espresso beans

Instructions

1. Step 1: Preheat the oven to 350ºF (177ºC) and prepare a 9-inch springform pan by spraying the sides with cooking spray and fitting the bottom with a parchment circle. Optionally, wrap the outside with aluminum foil to prevent leaks.
2. Step 2: In a large bowl, whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt. Add vegetable oil, egg, vanilla, and buttermilk; whisk until combined. Slowly pour in hot coffee or hot water, stirring until smooth. The batter will be thin.
3. Step 3: Pour batter into the prepared pan and bake for 25-30 minutes, until a toothpick inserted comes out clean. Let the cake cool completely.
4. Step 4: Place 2 cups of semi-sweet chocolate chips in a heatproof bowl. Heat 1 cup of heavy cream in a small saucepan over medium-low heat until it simmers around the edges, then pour over chocolate chips. Whisk until smooth and set aside to cool to room temperature, about 25 minutes.
5. Step 5: In a stand mixer fitted with a whisk (or using a hand mixer), beat the remaining 1 1/3 cups heavy cream with powdered sugar, vanilla, and optional instant coffee powder. Start on low, then increase speed to high and beat until stiff peaks form.
6. Step 6: Gently fold the whipped cream mixture into the cooled ganache until no streaks remain.
7. Step 7: Remove the cooled cake from the pan. Level the top if needed, peel off parchment, then place the cake back in the springform pan. Wrap an acetate cake collar around the cake, securing it with tape.
8. Step 8: Spread the mousse evenly over the cake layer, smoothing to the acetate edges. Refrigerate for at least 6 hours or overnight to set.
9. Step 9: For the ganache topping, heat 1/2 cup heavy cream over medium heat until simmering. Pour over 1/2 cup semi-sweet chocolate chips in a bowl and whisk until smooth. Cool to room temperature, about 20 minutes.
10. Step 10: Once mousse has set, remove the springform ring and acetate collar. Pour the cooled ganache over the mousse, spreading so it drips slightly over the edges.
11. Step 11: Decorate with fresh raspberries and chocolate covered espresso beans arranged in a crescent shape. Serve immediately or refrigerate until ready to serve.

Tips & Variations

• For homemade buttermilk, combine 1/2 cup milk with 1/2 teaspoon lemon juice or vinegar and let sit for 5 minutes.
• Use strong brewed coffee instead of hot water to enhance the chocolate flavor.
• Replace raspberries with fresh strawberries or cherries for a different fruit garnish.
• To make ahead, prepare the cake and mousse layers, refrigerate overnight, and add ganache just before serving.

Storage

Store the mousse cake covered in the refrigerator for up to 3 days. Avoid freezing as the texture of the mousse may change. To serve after refrigeration, let the cake sit at room temperature for 15-20 minutes to soften slightly.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I substitute almond milk for buttermilk?

Almond milk lacks the acidity and fat of buttermilk, which impacts texture and flavor. If you must substitute, add 1/2 tablespoon lemon juice or vinegar to almond milk and let it curdle before use, but results may vary.

What if I don’t have a springform pan?

A springform pan makes layering easier, but you can use a regular cake pan lined with parchment paper. To remove the cake carefully, cool it completely and invert onto a plate.