Triple Chocolate Hazelnut Mousse Cake

Posted on July 24, 2025

Pin

Meet my Triple Chocolate Hazelnut Mousse Cake. It features a moist chocolate sponge layer topped with creamy chocolate hazelnut mousse, all finished with a smooth chocolate hazelnut ganache. Every bite is bursting with Nutella flavor, and despite its fancy appearance, it’s super easy to make and completely egg and dairy-free.

We start with my one-bowl chocolate cake for the base layer. The creamy chocolate mousse is made with just 4 ingredients, whipped together for a light and airy texture. Finally, it’s topped with a glossy chocolate ganache and a sprinkle of chocolate shavings, creating an impressive yet simple dessert.

This cake features a layer of moist chocolate sponge topped with creamy chocolate hazelnut mousse and finished with a smooth chocolate hazelnut ganache. It’s egg-free, dairy-free, and super simple to make.


Triple Chocolate Hazelnut Mousse Cake (Egg-Free, Dairy-Free)

This Triple Chocolate Hazelnut Mousse Cake features a moist chocolate sponge layer, creamy chocolate hazelnut mousse, and a smooth chocolate hazelnut ganache. It has the delicious Nutella flavor throughout and is perfect for any special occasion.

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Triple Chocolate Hazelnut Mousse Cake

5 Stars 4 Stars 3 Stars 2 Stars 1 Star No reviews
  • Category: Dessert

Ingredients

Scale

Chocolate Sponge:

  • 1½ cups all-purpose flour
  • 1 cup granulated sugar
  • ½ cup cocoa powder
  • 1½ tsp baking powder
  • 1 tsp baking soda
  • ½ tsp salt
  • 1 cup dairy-free yogurt
  • ½ cup dairy-free buttermilk (plant-based milk + 1 tbsp lemon juice or vinegar)
  • ½ cup melted coconut oil or vegetable oil
  • 1 tsp vanilla extract
  • 1 cup hot water

Chocolate Hazelnut Mousse:

  • 1½ cups dairy-free whipping cream (like coconut cream or soy whipping cream)
  • ½ cup chocolate hazelnut spread (like Nutella, or a dairy-free alternative)
  • ¼ cup powdered sugar
  • 1 tsp vanilla extract

Chocolate Hazelnut Ganache:

  • 1 cup dairy-free dark chocolate chips
  • ½ cup canned coconut milk (full-fat)
  • ½ cup chocolate hazelnut spread

Topping:

  • Chocolate shavings or curls for garnish


Instructions

Prepare the Chocolate Sponge:

  1. Preheat your oven to 350°F (175°C).
  2. Grease and line a 9-inch round cake pan with parchment paper.
  3. In a large bowl, whisk together the flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt.
  4. In another bowl, mix the dairy-free yogurt, buttermilk, melted coconut oil, and vanilla extract until smooth.
  5. Add the wet ingredients to the dry ingredients, mixing until just combined.
  6. Gradually add the hot water, mixing until the batter is smooth.
  7. Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
  8. Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.

Prepare the Chocolate Hazelnut Mousse:

  1. In a large bowl, whip the dairy-free whipping cream until soft peaks form.
  2. Gently fold in the chocolate hazelnut spread, powdered sugar, and vanilla extract until fully combined and smooth.
  3. Refrigerate the mousse for at least 30 minutes to set.

Prepare the Chocolate Hazelnut Ganache:

  1. Place the dark chocolate chips in a heatproof bowl.
  2. In a small saucepan, heat the coconut milk until it just begins to simmer.
  3. Pour the hot coconut milk over the dark chocolate chips and let it sit for 2-3 minutes.
  4. Stir until the chocolate is melted and the ganache is smooth.
  5. Stir in the chocolate hazelnut spread until fully combined.

Assemble the Cake:

  1. Place the cooled chocolate sponge layer on a serving plate or cake stand.
  2. Spread the chocolate hazelnut mousse evenly over the sponge layer.
  3. Pour the chocolate hazelnut ganache over the mousse layer, allowing it to smooth out over the top and drip down the sides.
  4. Garnish with chocolate shavings or curls.

Chill and Serve:

  1. Refrigerate the cake for 2-4 hours to set completely before slicing and serving.
  2. Enjoy this rich and indulgent dessert!

Notes

  • Dairy-Free Buttermilk: Make this by combining plant-based milk with 1 tbsp of lemon juice or vinegar and letting it sit for 5-10 minutes.
  • Dairy-Free Whipping Cream: Brands like coconut cream or soy whipping cream work well for the mousse.
  • Chocolate Hazelnut Spread: Ensure to use a dairy-free version if necessary.

Tags:

You might also like these recipes

Leave a Comment

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star