Jul 14 2026
RestaurantsOlives and OilChocolate Mousse Cake Recipe

Chocolate Mousse Cake Recipe

Inspired by Olives and Oil
Time1h 30m
Serves12

Chocolate Cake, Ganache

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Ingredients

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Chocolate Cake

Chocolate Ganache

Method

Chocolate Cake

  1. 1

    Preheat the Oven

    Preheat your oven to 350°F (175°C) and grease two 9-inch round cake pans.

  2. 2

    Mix Dry Ingredients

    In a large mixing bowl, sift together the all-purpose flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt.

  3. 3

    Combine Wet Ingredients

    In another bowl, whisk together the eggs, buttermilk, vegetable oil, and vanilla extract until well combined.

  4. 4

    Combine Mixtures

    Gradually add the wet ingredients to the dry ingredients, mixing until just combined. Slowly stir in the boiling water until the batter is smooth.

  5. 5

    Bake the Cake

    Divide the batter evenly between the prepared cake pans. Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted in the center comes out clean.

  6. 6

    Cool the Cakes

    Remove from the oven and let the cakes cool in the pans for 10 minutes. Then, turn them out onto wire racks to cool completely.

Chocolate Ganache

  1. 7

    Heat the Cream

    In a small saucepan over medium heat, bring the heavy cream to a gentle simmer.

  2. 8

    Melt the Chocolate

    Remove the saucepan from heat and add the semi-sweet chocolate chips. Let sit for 5 minutes without stirring.

  3. 9

    Stir in Butter

    After 5 minutes, stir the mixture until smooth and glossy. Add the unsalted butter and stir until fully incorporated.

  4. 10

    Cool the Ganache

    Allow the ganache to cool at room temperature until it thickens slightly and is spreadable.

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