Dark Chocolate Mousse Cake

Name: Dark Chocolate Mousse Cake
Prep time: 2 h 30 min
Cook time: 25 min
Total time: 2 h 55 min
Cuisine: American
Ingredients: 1 and 3/4 cups (219g) all-purpose flour (spooned & leveled); 3/4 cup (62g) unsweetened natural cocoa powder* (see note); 1 and 3/4 cups (350g) granulated sugar; 2 teaspoons baking soda; 1 teaspoon baking powder; 1 teaspoon salt; 2 teaspoons espresso powder (optional)*; 1/2 cup (120ml) canola or vegetable oil; 2 large eggs, at room temperature; 3/4 cup (180g) full fat sour cream, at room temperature; 1/2 cup (120ml) buttermilk, at room temperature*; 2 teaspoons pure vanilla extract; 1/2 cup (120ml) hot water or coffee*; optional: 1 cup (180g) mini or regular semi-sweet chocolate chips; optional garnish: fresh berries and/or chocolate shavings; 1/2 cup (120ml) hot water; 1/4 cup (22g) unsweetened cocoa powder* (see note); two 4-ounce quality semi-sweet chocolate bars (113g each), finely chopped*; 2 cups (480ml) heavy cream or heavy whipping cream; 2 Tablespoons (15g) confectioners’ sugar; 1/2 teaspoon pure vanilla extract; 1 cup (240ml) heavy cream or heavy whipping cream

Instructions

Prep:2h 30minCook:25min

This super moist dark chocolate cake combines unsweetened natural cocoa powder and dark cocoa powder for an extra rich flavor. Fill the cake with a simplified chocolate mousse and cover it with semi-sweet chocolate ganache. If needed, you can prepare the ganache and mousse ahead of time. See notes.

Updated at: Sat, 09 Aug 2025 02:32:50 GMT