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Chocolate Mousse Cake with Truffles

A Chocolate Lovers utopia. This chocolate mousse cake with truffles on top is just what the doctor ordered. It’s perfect for a decadent dessert!

A Chocolate Lovers utopia. This chocolate mousse cake with truffles on top is just what the doctor ordered. It's perfect for a decadent dessert!

A Chocolate Lovers utopia. This chocolate mousse cake with truffles on top is just what the doctor ordered. It's perfect for a decadent dessert!

Three Layer Chocolate Mousse Cake with Chocolate Raspberry Truffles

Oh Wow! This is a chocolate-lovers dream cake!

Three layers of Chocolate Cake

Chocolate Mousse Frosting

Chocolate Raspberry Truffles

This chocolate mousse cake was just what the doctor ordered for your tweet tooth. It’s a great cake for a special birthday celebration. My husband even went so far to say her would have liked this cake for his grooms cake.

A perfect cake -Combed chocolate frosting with macadamia nuts around the perimeter and topped with truffles.

Let me take a minute to harness my inner Jack Nicholson for a second … ahem… You can’t  handle the Chocolate. Lol… okay, I’m sorry for that…  But in all honesty, see the rays of light in the photo above? God has even endorsed this cake. I loved the light so much that I didn’t want to edit them out. It was the perfect effect.

Triple layers of chocolate cake, chocolate mousse frosting, and chocolate truffles are perfect for a fancy birthday celebration.

Yes, this cake was THAT good!

If you have made your cake and truffles, you can make your frosting. If you’re ambitious and have the time, you can make this cake in one day. It’s not difficult. The truffles can sit overnight and the iced cake can sit over night and all you have to do is finish decorating it  the next day.

This Chocolate Mousse Frosting is light and fluffy, but is best when served on the same day.

Since the frosting is a mousse, it’s best eaten the day that it’s served. However, my husband had no problems enjoying this cake two days later. It was still amazing!

Chocolate Mousse Cake with Truffles

A Chocolate Lovers utopia. A rich cake with a mousse frosting and chocolate truffles.

Preparation 1 hour
Cook Time 00:00
Total Time 1:00
Serves 1 9inch cake     adjust servings


For the Mousse Frosting

  • 2 cups heavy cream
  • 3/4 oz unsweetened cocoa powder
  • 13 oz bittersweet chocolate
  • 1 sticks (1/2 cup) butter, cut into small cubes
  • 1 teaspoons vanilla
  • pinch of salt
  • 7 egg whites
  • 1/2 cup sugar
  • 1 1/2 - 2 C chopped macadamia nuts


  1. Prepare a large bowl for an ice bath. Be sure that the medium bowl will fit inside.
  2. In a medium pot, combine the cream and cocoa and heat until a full boil forms. Remove from heat and pour over chocolate pieces and butter. Wait five minutes for the milk to melt the chocolate then slowly whisk until the chocolate and butter are completely melted, blended and smooth.
  3. Add in the vanilla and salt, then place the bowl into the prepared ice bath and whisk until the chocolate has come to room temperature. Lumps will form if you stop mixing. Once cool, remove from the ice bath and set aside.
  4. Whip the egg whites with a whisk attachment in a mixer. Once the whites are foamy, slowly add in the sugar and continue whipping until stiff peaks form.
  5. Fold in a third of the chocolate into the meringue then gradually add in all of the chocolate and fold until the chocolate and meringue are incorporated.
  6. Reserve a cup of the frosting.

To assemble the cake

  1. Place the top layer of the cake, upside down into a springform pan. Add ⅓ of the chocolate mousse frosting allowing it to run over the sides. Place the second slice of cake on top along with more frosting and finally top with the bottom slice of the cake with the bottom up (smooth side up). Cover the cake and fill in the sides with the frosting. Allow to chill overnight.
  2. Slide a warm, dry knife along the edge of the springform pan and slowly release the clasp. Remove from the pan and place on a serving dish.
  3. * If you can safely remove the bottom of the pan, do so. I used a Large Cake Lifter to move my cake off the springform bottom and onto the cake platter.
  4. Use the extra frosting to touch up any spots and add it to the top of the cake. Use a serrated knife to make groves in the top of the cake or you can use an inexpensive tool like this Decorating Comb.
  5. Take the chopped macadamia nuts and gently press them into the sides of the cake. A lot will fall off onto the platter. Just keep going around until the cake sides are coated.
  6. Finally, top with the truffles and place in the fridge for an hour before serving. I found this cake was best served cold.


Recipe Notes

Recipe via Fine Cooking Chocolate Magazine

Gotta Sweet Tooth? Share your recipe with me on Instagram using the hashtag #PintSizedBaker so I can see what you've been craving!

This Chocolate Mousse Cake is part of a series. Find the Chocolate Cake Recipe and Torting Tutorial HERE. Find the recipe for Chocolate Raspberry Truffles HERE.

Chocolate Mouse Cake Collage

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