Why You’ll Love This Recipe

Chocolate Mousse Brownies are the perfect combination of two beloved desserts—brownies and chocolate mousse. The fudgy brownie base offers a deep, chocolatey flavor, while the mousse adds a creamy, fluffy contrast that takes the texture to the next level. With just a few ingredients, this dessert is easy to prepare yet feels incredibly indulgent. Whether you’re a chocolate lover or simply looking for a show-stopping dessert, these brownies are sure to satisfy your sweet tooth!

Ingredients

For the brownies:

  • 1/2 cup unsalted butter, melted

  • 1 cup granulated sugar

  • 2 large eggs

  • 1 teaspoon vanilla extract

  • 1/3 cup unsweetened cocoa powder

  • 1/2 cup all-purpose flour

  • 1/4 teaspoon salt

  • 1/4 teaspoon baking powder

For the chocolate mousse:

  • 1 cup heavy cream

  • 8 oz semi-sweet or bittersweet chocolate, chopped

  • 2 tablespoons powdered sugar (optional, for sweetness)

  • 1 teaspoon vanilla extract

  • Pinch of salt

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Directions

For the brownies:

  1. Preheat the oven: Preheat your oven to 350°F (175°C). Grease or line an 8×8-inch baking pan with parchment paper, leaving a bit of an overhang for easy removal later.

  2. Mix the brownie batter: In a large bowl, whisk together the melted butter and sugar until smooth. Add the eggs, one at a time, beating well after each addition. Stir in the vanilla extract.

  3. Add the dry ingredients: In a separate bowl, whisk together the cocoa powder, flour, salt, and baking powder. Gradually fold the dry ingredients into the wet mixture until combined. The batter will be thick.

  4. Bake the brownies: Pour the brownie batter into the prepared baking pan and spread it evenly. Bake for 18-22 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs. Remove from the oven and let the brownies cool in the pan.

For the chocolate mousse:

  1. Heat the cream: In a small saucepan, heat the heavy cream over medium heat until it begins to simmer (don’t let it boil).

  2. Melt the chocolate: Place the chopped chocolate in a heatproof bowl. Pour the hot cream over the chocolate and let it sit for 2-3 minutes to soften. Then, stir until the chocolate is completely melted and smooth.

  3. Whip the mousse: Once the chocolate mixture is smooth, let it cool to room temperature. In a separate chilled bowl, whip the heavy cream until soft peaks form. Then, gently fold the whipped cream into the cooled chocolate mixture until it becomes light and fluffy.

  4. Assemble the brownies: Once the brownies are completely cool, spread the mousse evenly over the brownie layer. Use a spatula to smooth it out.

  5. Chill: Place the brownies in the refrigerator for at least 2-3 hours, or until the mousse has set and firmed up.

Serve:

  • Once chilled, cut the Chocolate Mousse Brownies into squares. Garnish with chocolate shavings, whipped cream, or berries if desired. Serve and enjoy the rich, indulgent layers of brownie and mousse!

Servings and Timing

  • Servings: 9-12 squares (depending on how large you cut them)

  • Prep Time: 20 minutes

  • Cook Time: 18-22 minutes

  • Chilling Time: 2-3 hours

  • Total Time: 3-4 hours (including chilling time)

Variations

  • Add-ins: You can fold in some chopped nuts (like walnuts, pecans, or hazelnuts) into the brownie batter before baking for added crunch and texture.

  • Flavor variations: Add a splash of liqueur like Baileys or Kahlúa to the mousse for a sophisticated flavor twist.

  • Dairy-Free Option: Use dairy-free chocolate and coconut cream for a dairy-free version of the mousse.

  • Toppings: Top the mousse layer with fresh fruit like raspberries or strawberries for a refreshing contrast to the rich chocolate flavor.

Storage/Reheating

These Chocolate Mousse Brownies can be stored in an airtight container in the refrigerator for up to 4 days. Since the mousse is best enjoyed chilled, they should be served straight from the fridge. They can also be frozen for up to 3 months—simply wrap them tightly in plastic wrap and foil before freezing. Thaw in the fridge before serving.

FAQs

Can I use different chocolate for the mousse?

Yes! You can use milk chocolate, dark chocolate, or bittersweet chocolate depending on your personal preference for sweetness and richness. The mousse will be slightly different based on the type of chocolate used, but all variations will be delicious.

Can I make the mousse ahead of time?

Yes, you can make the mousse ahead of time. Just refrigerate it for up to 1 day before assembling the brownies. Make sure the mousse is fully chilled before spreading it over the brownies.

Can I make the brownie layer ahead of time?

Yes, you can bake the brownie layer a day ahead. Just make sure it’s completely cooled before storing it in an airtight container. When ready to assemble, spread the mousse on top and refrigerate.

Can I make these brownies gluten-free?

Yes! You can make the brownie layer gluten-free by using a gluten-free flour blend in place of all-purpose flour. Make sure the cocoa powder you’re using is also gluten-free, and the mousse will naturally be gluten-free.

How do I get perfect, clean slices of brownies?

For clean slices, use a sharp knife and dip it in warm water before slicing. Wipe the knife clean after each cut to keep the slices neat and tidy.

Conclusion

Chocolate Mousse Brownies are a decadent dessert that combines the best of both worlds: fudgy brownies and airy chocolate mousse. This indulgent treat is perfect for chocolate lovers and will surely impress guests with its rich, layered flavors and velvety texture. Whether you’re making them for a special occasion or simply satisfying your sweet tooth, these brownies are sure to be a hit. Enjoy every bite of this luxurious dessert!

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Chocolate Mousse Brownies

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  • Author: Lisa
  • Prep Time: 20 minutes
  • Cook Time: 15-20 minutes
  • Total Time: 3-4 hours
  • Yield: 9-12 squares
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian
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Description

Chocolate Mousse Brownies are the ultimate indulgent dessert, blending rich, fudgy brownies with light, fluffy chocolate mousse. This layered treat combines dense chocolatey brownies with a smooth, airy mousse topping, creating a perfect balance of textures. A simple yet show-stopping dessert, these brownies will satisfy your sweet tooth and impress any crowd.

Ingredients

For the brownies:

  • 1/2 cup unsalted butter, melted

  • 1 cup granulated sugar

  • 2 large eggs

  • 1 teaspoon vanilla extract

  • 1/3 cup unsweetened cocoa powder

  • 1/2 cup all-purpose flour

  • 1/4 teaspoon salt

  • 1/4 teaspoon baking powder

For the chocolate mousse:

  • 1 cup heavy cream

  • 8 oz semi-sweet or bittersweet chocolate, chopped

  • 2 tablespoons powdered sugar (optional, for sweetness)

  • 1 teaspoon vanilla extract

  • Pinch of salt

Instructions

    • Preheat the oven to 350°F (175°C). Grease or line an 8×8-inch baking pan with parchment paper.

    • In a large bowl, whisk together the melted butter and sugar until smooth. Add eggs, one at a time, beating well after each. Stir in vanilla extract.

    • In a separate bowl, whisk together cocoa powder, flour, salt, and baking powder. Gradually fold the dry ingredients into the wet mixture until well combined. The batter will be thick.

    • Pour the batter into the prepared pan and bake for 18-22 minutes, or until a toothpick inserted comes out with just a few moist crumbs. Let the brownies cool completely.

  • For the chocolate mousse:

    • Heat heavy cream in a saucepan over medium heat until it begins to simmer (do not boil).

    • Pour the hot cream over chopped chocolate in a heatproof bowl. Let it sit for 2-3 minutes, then stir until smooth.

    • Once the chocolate mixture is cool, whip the remaining heavy cream until soft peaks form. Gently fold the whipped cream into the chocolate mixture until it becomes light and fluffy.

  • Assemble the brownies:

    • Once the brownies have cooled, spread the mousse evenly over the brownie layer. Smooth it out with a spatula.

    • Refrigerate the brownies for 2-3 hours, or until the mousse sets.

  • Serve:

    • Once chilled, slice into squares. Optionally, garnish with chocolate shavings, whipped cream, or berries. Serve and enjoy!

Notes

Add chopped nuts (like walnuts or pecans) to the brownie batter for added crunch.For an extra flavor twist, add a splash of Baileys or Kahlúa to the mousse.You can use dairy-free chocolate and coconut cream for a dairy-free mousse option.

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