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Chocolate Hazelnut Mousse Brownies

2023-02-20 - Written by: Emma Taylor

Brownies Chocolate Hazelnut

Chocolate Hazelnut Mousse Brownies

Rich, fudgy brownies infused with the deep flavor of hazelnuts and topped with a light, airy chocolate mousse.

Chocolate Hazelnut Mousse Brownies

Ingredients

  • 1 and 1/2 sticks of unsalted butter (12 tablespoons), plus more for greasing the pan
  • 2 cups of sugar
  • 4 large eggs
  • 1/2 cup of unsweetened cocoa powder
  • 1 teaspoon of vanilla extract
  • 1 and 1/4 cups of all-purpose flour
  • 1 teaspoon of salt
  • 1 cup of chopped hazelnuts
  • 1 cup of semisweet chocolate chips

Instructions

Preparing the Brownies

  1. Preheat your oven to 350°F (175°C). Grease an 8-inch square baking pan with butter and line it with parchment paper.
  2. Melt the butter and sugar in a medium saucepan over low heat, stirring occasionally. Bring to a simmer and cook for about 5 minutes or until the butter has melted.
  3. Remove from the heat and stir in the cocoa powder until well combined. Let cool slightly.
  4. Stir in the eggs one at a time, followed by the vanilla extract. Add the flour and salt, mixing until just combined.
  5. Fold in the chopped hazelnuts.

Baking the Brownies

  1. Pour the batter into the prepared baking pan and smooth the top.
  2. Bake for 25-30 minutes or until a toothpick inserted into the center comes out with a few moist crumbs attached.
  3. Remove from the oven and let cool completely in the pan.

Preparing the Chocolate Mousse

  1. In a double boiler or a heatproof bowl set over a pot of simmering water, melt the chocolate chips, stirring occasionally.
  2. Once melted, remove from the heat and stir in 1/4 cup of heavy cream until well combined.
  3. Let cool to room temperature.

Assembling the Brownies

  1. Cut the cooled brownie into squares or use a cookie cutter to create shapes.
  2. Top each brownie with a dollop of chocolate mousse.
  3. Garnish with additional chopped hazelnuts, if desired.

Notes

  • For a more intense chocolate flavor, you can add 1-2 tablespoons of instant coffee powder to the batter.
  • If you prefer a lighter texture in your brownies, you can add an extra egg white or use aquafaba as a substitute.
  • You can also toast the hazelnuts for added depth of flavor by spreading them on a baking sheet and baking at 350°F (175°C) for 5-7 minutes, stirring occasionally.