Instructions
- Preheat & Prepare
Preheat the oven to 350°F (175°C). Grease and line two 8-inch (20 cm) round cake pans with parchment paper. - Mix Dry Ingredients
In a large bowl, whisk together flour, cocoa powder, sugar, baking powder, baking soda, and salt until evenly combined. - Add Wet Ingredients
Add eggs, milk, oil, and vanilla extract. Beat until smooth and slightly thickened. Carefully stir in the hot coffee (or water). The batter will be thin — this ensures a moist cake. - Bake
Divide the batter evenly between the prepared pans. Bake for 30–35 minutes, or until a toothpick inserted into the center comes out clean. Let cool in pans for 10 minutes, then transfer to a wire rack to cool completely. - Prepare the Chocolate Base for Mousse
Place chopped chocolate in a heatproof bowl. Heat ½ cup (120 ml) of the heavy cream until just simmering, then pour over the chocolate. Let sit for 2 minutes, then stir until smooth and glossy. Allow to cool to room temperature. - Whip the Cream
In a separate bowl, whip the remaining ½ cup (120 ml) heavy cream with sugar and vanilla until soft peaks form. - Fold & Create the Mousse
Gently fold the whipped cream into the cooled chocolate mixture in two additions. Use slow, sweeping motions to keep the mousse light and airy. - Assemble the Cake
Place one cooled cake layer on a serving plate. Spread the silky mousse evenly over the top, leaving a small border around the edges. Gently place the second cake layer on top. - Chill to Set
Refrigerate the cake for at least 1 hour to allow the mousse to firm up slightly before slicing. - Garnish & Serve
Dust with cocoa powder or top with chocolate shavings and fresh berries for a stunning finish. Slice with a warm knife for clean cuts.
Recipe Details
Prep Time: 25 minutes
Cook Time: 35 minutes
Chill Time: 1 hour
Total Time: About 2 hours
Servings: 10–12 slices
Difficulty Level: Medium
Variations & Substitutions
- Dark Chocolate Lovers: Use 70% dark chocolate for a deeper, more intense flavor.
- Mocha Twist: Add 1 teaspoon instant espresso powder to the mousse.
- Berry Layer: Add a thin layer of raspberry jam beneath the mousse for a fruity contrast.
- Gluten-Free Option: Substitute with a 1:1 gluten-free baking flour blend.
Serving Suggestions
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