Decadent Triple Chocolate Mousse Cake

Joseph Thompson | 🗓️Modified: March 6, 2025 | ⏳Time to read:6 min

Tempt Your Taste Buds with a Decadent Triple Chocolate Mousse Cake Recipe

Indulge in the ultimate chocolate experience with a moist and rich cake, paired with a velvety ganache frosting and a light-as-air chocolate mousse filling. This triple chocolate mousse cake is a chocolate lover’s dream come true, and it’s surprisingly easier to make than you might think.

A Chocolate Lover’s Paradise

Chocolate is a beloved treat for many of us, and for good reason. Rich, decadent, and indulgent, chocolate can evoke feelings of happiness and satisfaction. And what better way to indulge in chocolate than with a triple chocolate mousse cake?

This heavenly dessert is a masterclass in texture and flavor, with a tender cake, a creamy mousse filling, and a rich ganache frosting. Each bite is a symphony of chocolatey goodness, and we can’t wait to share the recipe with you.

Ingredients and Equipment

Before we dive into the instructions, let’s take a look at what you’ll need to make this impressive dessert. Here’s a breakdown of the ingredients and equipment required:

For the Cake:

  • 2 cups all-purpose flour
  • 1/2 cup sifted cocoa powder, plus more for dusting
  • 1 1/4 teaspoons baking soda
  • 1/4 teaspoon baking powder
  • Pinch of salt
  • 1 cup mayonnaise
  • 1 cup granulated sugar
  • 3 large eggs
  • 1 1/4 cups water
  • 1 teaspoon vanilla extract

For the Ganache Frosting:

  • 8 ounces bittersweet chocolate, chopped
  • 3/4 cup heavy cream
  • 1 1/2 tablespoons corn syrup

For the Chocolate Mousse Filling:

  • 1 1/2 teaspoons unflavored gelatin
  • 1 tablespoon cold water
  • 1 tablespoon boiling water
  • 6 ounces bittersweet chocolate, chopped
  • 1 1/2 cups heavy cream, divided
  • 2 tablespoons granulated sugar

In terms of equipment, you’ll need a 9-inch springform pan, a heatproof bowl, a small saucepan, and a stand mixer or hand mixer.

Instructions

Now that we have our ingredients and equipment ready, let’s dive into the instructions. Here’s a step-by-step guide to making this incredible triple chocolate mousse cake:

For the Cake:

Step 1: Preheat and Prepare the Pan

Preheat your oven to 350°F (175°C). Grease and flour a 9-inch springform pan, tapping out any excess flour. This will ensure your cake releases smoothly from the pan.

Step 2: Whisk Together the Dry Ingredients

In a large bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt. Make sure to get rid of any lumps and aerate the mixture.

Step 3: Beat Together the Wet Ingredients

In a separate bowl, beat together the mayonnaise, sugar, eggs, water, and vanilla extract. Yes, you read that right – mayonnaise! It may seem strange, but trust us, it’s a game-changer for keeping the cake moist.

Step 4: Combine the Wet and Dry Ingredients

Add the wet ingredients to the dry ingredients and whisk until just combined. Be careful not to overmix, as this can lead to a dense cake.

Step 5: Pour the Batter into the Pan and Bake

Pour the batter into the prepared pan and smooth out the top. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean. Let the cake cool completely in the pan before frosting.

For the Ganache Frosting:

Step 1: Melt the Chocolate

In a heatproof bowl, place the chopped chocolate. In a small saucepan, heat the heavy cream and corn syrup until just simmering. Pour the hot cream mixture over the chocolate and let it sit for a minute.

Step 2: Stir Until Smooth

Stir the chocolate until it’s completely melted and smooth. Let the ganache cool slightly before frosting the cake. This will help it set and prevent it from becoming too runny.

For the Chocolate Mousse Filling:

Step 1: Bloom the Gelatin

Sprinkle the gelatin over the cold water and let it bloom for 5 minutes. This will help it dissolve and create a smooth, creamy texture.

Step 2: Melt the Chocolate

In a separate bowl, melt the chocolate in the microwave or over a double boiler. Be careful not to burn the chocolate, as this can give it a bitter flavor.

Step 3: Heat the Gelatin Mixture

In a saucepan, heat the boiling water and add the bloomed gelatin, stirring until dissolved. Add the gelatin mixture to the melted chocolate and stir until smooth.

Step 4: Whip the Heavy Cream

In a clean bowl, beat 1 cup of the heavy cream until stiff peaks form. Gradually fold the whipped cream into the chocolate mixture until smooth. Be careful not to overmix, as this can lead to a dense mousse.

Assembly and Decoration

Now that we have our cake, ganache frosting, and chocolate mousse filling ready, it’s time to assemble the cake. Here’s a step-by-step guide:

Step 1: Place the Cooled Cake on a Serving Plate

Place the cooled cake layer on a serving plate or cake stand. You can dust the plate or stand with cocoa powder or powdered sugar for a decorative touch.

Step 2: Spread a Layer of Chocolate Mousse Filling

Spread a layer of chocolate mousse filling on top of the cake, leaving a 1/2-inch border around the edges. This will help the mousse set and prevent it from oozing out during assembly.

Step 3: Chill and Repeat

Chill the cake in the refrigerator for 30 minutes. Repeat the process with another layer of cake and mousse filling, finishing with a layer of cake on top.

Step 4: Frost with Ganache Frosting

Frost the top and sides of the cake with the ganache frosting. Make sure to cover the entire cake, as this will help seal in the moisture and create a smooth texture.

Step 5: Chill and Serve

Chill the cake for at least 4 hours or overnight before serving. This will allow the flavors to meld together and the cake to set. Slice and serve with a drizzle of chocolate sauce, whipped cream, or fresh fruit.

Tips and Variations

Here are some tips and variations to help you customize and perfect your triple chocolate mousse cake:

  • Use high-quality chocolate: The better the chocolate, the better the cake. Choose a high-quality bittersweet chocolate for the best results.
  • Don’t overmix: Make sure to mix the ingredients just until combined. Overmixing can lead to a dense cake and a grainy mousse.
  • Chill the cake: Chilling the cake is crucial for allowing the flavors to meld together and the cake to set. Don’t skip this step!
  • Experiment with flavors: Try adding a teaspoon of espresso powder or orange extract to the cake and mousse filling for a unique twist.
  • Decorate with fresh fruit: Top the cake with fresh fruit, such as raspberries or blueberries, for a pop of color and added flavor.

Conclusion

This triple chocolate mousse cake is a show-stopping dessert that’s sure to impress. With its moist cake, creamy mousse filling, and rich ganache frosting, it’s a chocolate lover’s paradise. Try making it for your next special occasion, and watch as your guests swoon over the decadent flavors and textures.

Remember, baking is all about experimentation and having fun. Don’t be afraid to try new ingredients and techniques, and don’t worry if your cake doesn’t turn out perfectly. After all, it’s the imperfections that make it unique and special.

About Joseph Thompson

Joseph Thompson is a passionate food enthusiast and seasoned writer, dedicated to exploring the vibrant world of cuisine and sharing his culinary discoveries with others. With a keen palate and an insatiable appetite for new flavors, Joseph brings a unique perspective to the table, offering readers insightful reviews, tantalizing recommendations, and captivating food stories. As a valued contributor to MenuPricesat.com, Joseph's mission is to inspire others to embark on their own gastronomic adventures and discover the joy of delicious dining experiences.

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