Jul 14 2026
Restaurants›The Old Spaghetti Factory›Chocolate Mousse Cake Recipe

Chocolate Mousse Cake Recipe

Inspired by The Old Spaghetti Factory
Time3h
Serves12

Decadent chocolate cake filled and topped with silky dark chocolate mousse, bittersweet fudge, and finished with fine chocolate curls.

Jump to Recipe

Was this page helpful?

Help improve this recipe for others.

Send this recipe to your inbox.

We'll email it straight to you - plus weekly cooking inspiration.

Ingredients

Some product links may be affiliates. If you buy through them, you're supporting the site and Pekin may earn a commission at no extra cost to you.

Cake

Chocolate Mousse

Fudge Topping

Garnish

Method

Cake Preparation

  1. 1

    Preheat 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 bowl, whisk together flour, sugar, cocoa powder, baking powder, baking soda, and salt.

  3. 3

    Combine Wet Ingredients

    Add eggs, milk, vegetable oil, and vanilla extract to the dry ingredients. Mix until well combined.

  4. 4

    Add Boiling Water

    Carefully stir in boiling water until the batter is smooth (the batter will be thin).

  5. 5

    Bake

    Pour the batter evenly into the prepared pans and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.

  6. 6

    Cool

    Let the cakes cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.

Mousse Preparation

  1. 7

    Melt Chocolate

    In a heatproof bowl, melt the bittersweet chocolate over a double boiler or in the microwave. Let cool slightly.

  2. 8

    Prepare Gelatin

    In a small bowl, sprinkle gelatin over cold water and let it sit for 5 minutes to bloom.

  3. 9

    Whip Cream

    In a separate bowl, whip heavy cream and powdered sugar until soft peaks form. Stir in vanilla extract.

  4. 10

    Combine

    Dissolve bloomed gelatin over low heat and then mix into melted chocolate. Fold in whipped cream until combined.

Assembly

  1. 11

    Layer Cake

    Place one layer of the cooled cake on a serving plate and spread half of the mousse on top.

  2. 12

    Top with Second Layer

    Add the second layer of cake and spread the remaining mousse over the top and sides.

  3. 13

    Chill

    Refrigerate the cake for at least 4 hours or until the mousse is set.

  4. 14

    Prepare Fudge Topping

    In a small saucepan, heat heavy cream until just simmering. Remove from heat and stir in bittersweet chocolate until smooth.

  5. 15

    Finish Cake

    Pour fudge topping over the chilled mousse cake and spread evenly. Garnish with chocolate curls.

  6. 16

    Serve

    Slice and enjoy your decadent chocolate mousse cake!

More from The Old Spaghetti Factory