Chocolate Mousse Brownies

Highlighted under: Baking & Desserts

Layers of creamy chocolate mousse meet rich, fudgy brownies in this decadent dessert that will satisfy any chocolate lover's cravings. Each bite is a delightful combination of textures and flavors, making these brownies a showstopper for any occasion. Perfect for gatherings or a sweet treat at home, this recipe is simple yet impressive!

Lillian Hayes

Created by

Lillian Hayes

Last updated on 2025-12-02T09:34:01.331Z

These Chocolate Mousse Brownies are not just your usual dessert; they are an experience. Ideal for any chocolate lover, the combination of rich brownie and fluffy mousse creates a texture that simply melts in your mouth.

The Perfect Dessert for Chocolate Lovers

If you’re a fan of chocolate, these Chocolate Mousse Brownies are a dream come true. The rich fudginess of the brownie layer melds perfectly with the light, airy chocolate mousse. This layered dessert balances intense chocolate flavor with a contrasting texture that creates a truly indulgent experience. Each bite is a celebration of chocolate that will impress your guests and leave them wanting more.

Not only do these brownies satisfy your sweet tooth, but they also provide a stunning presentation. The glossy mousse topping over the brownie base creates an elegant visual appeal that makes this dessert perfect for special occasions. Whether it’s a birthday, holiday gathering, or a simple dinner with friends, these brownies will be the star of your dessert table.

Easy to Make Yet Impressive

One of the best aspects of this recipe is its simplicity. While the layers may seem elaborate, the steps are straightforward, making it accessible even for novice bakers. With just a few basic ingredients, you can create a gourmet chocolate dessert that looks and tastes like it came from a high-end bakery.

The key to success lies in following the recipe closely and allowing the brownie base to cool completely before adding the mousse layer. This ensures that the mousse sets properly and maintains its fluffy texture, resulting in a delicious contrast with the dense brownie base. You’ll feel proud to serve these at any event or enjoy them as a special treat at home.

Ingredients

Gather all your ingredients before you start to make the process smooth and enjoyable.

Brownie Layer

  • 1/2 cup unsalted butter
  • 1 cup sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1/3 cup cocoa powder
  • 1/2 cup all-purpose flour
  • 1/4 teaspoon salt
  • 1/4 teaspoon baking powder

Chocolate Mousse Layer

  • 1 cup heavy whipping cream
  • 1 cup semi-sweet chocolate chips
  • 2 large egg whites
  • 1/4 cup sugar
  • 1 teaspoon vanilla extract

Make sure all ingredients are at room temperature for the best results.

Instructions

Follow these steps carefully to create your delicious brownies.

Make the Brownie Base

Preheat your oven to 350°F (175°C). Grease a 9x9 inch baking dish. In a saucepan, melt the butter and mix in sugar. Allow to cool slightly, then stir in eggs and vanilla. Mix in the cocoa, flour, salt, and baking powder until just combined. Pour into the prepared baking dish.

Bake the Brownies

Bake in the preheated oven for about 20-25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Let cool completely.

Prepare the Mousse

In a microwave-safe bowl, heat chocolate chips until melted, stirring until smooth. In another bowl, beat the cream until stiff peaks form. In a separate bowl, beat egg whites with sugar until stiff peaks form. Gently fold the melted chocolate into the whipped cream, then fold in the egg whites. Spread the mousse over the cooled brownie base.

Chill and Serve

Refrigerate for at least 2 hours before slicing into squares and serving. Enjoy your rich, decadent treat!

Remember to chill for a bit longer if you want the mousse to set firmly.

Storing Your Chocolate Mousse Brownies

After making your Chocolate Mousse Brownies, proper storage is essential to keep them fresh. Store any leftover brownies in an airtight container in the refrigerator. This will protect the mousse from absorbing any odors from your fridge and maintain its creamy consistency. They can last up to a week, although they’re likely to disappear much sooner!

If you want to prepare these brownies in advance, you can make the brownie layer a day ahead, allowing it to cool completely. Then, add the mousse layer the next day. This is a great time-saver for parties or gatherings, ensuring that you have a delicious dessert ready when you need it.

Variations and Add-Ins

Feel free to get creative with these brownies by adding your favorite mix-ins. Chopped nuts like walnuts or pecans can add delightful texture and flavor when folded into the brownie batter. Additionally, consider incorporating a layer of fruit, such as raspberries or strawberries, between the brownie and mousse layers for a fresh twist.

For a deeper chocolate experience, try using dark chocolate chips instead of semi-sweet chips in the mousse. This will enhance the chocolate flavor and cater to those who love rich, dark chocolate desserts. No matter how you choose to customize them, these brownies are sure to be a hit!

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Questions About Recipes

→ How do I store leftovers?

Store the brownies in an airtight container in the refrigerator for up to 3 days.

→ Can I use different chocolate?

Yes, you can use dark chocolate or even white chocolate, depending on your preference.

Chocolate Mousse Brownies

Layers of creamy chocolate mousse meet rich, fudgy brownies in this decadent dessert that will satisfy any chocolate lover's cravings. Each bite is a delightful combination of textures and flavors, making these brownies a showstopper for any occasion. Perfect for gatherings or a sweet treat at home, this recipe is simple yet impressive!

Prep Time30 minutes
Cooking Duration30 minutes
Overall Time1 hour

Created by: Lillian Hayes

Recipe Type: Baking & Desserts

Skill Level: Intermediate

Final Quantity: 12 brownies

What You'll Need

Brownie Layer

  1. 1/2 cup unsalted butter
  2. 1 cup sugar
  3. 2 large eggs
  4. 1 teaspoon vanilla extract
  5. 1/3 cup cocoa powder
  6. 1/2 cup all-purpose flour
  7. 1/4 teaspoon salt
  8. 1/4 teaspoon baking powder

Chocolate Mousse Layer

  1. 1 cup heavy whipping cream
  2. 1 cup semi-sweet chocolate chips
  3. 2 large egg whites
  4. 1/4 cup sugar
  5. 1 teaspoon vanilla extract

How-To Steps

Step 01

Preheat your oven to 350°F (175°C). Grease a 9x9 inch baking dish. In a saucepan, melt the butter and mix in sugar. Allow to cool slightly, then stir in eggs and vanilla. Mix in the cocoa, flour, salt, and baking powder until just combined. Pour into the prepared baking dish.

Step 02

Bake in the preheated oven for about 20-25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Let cool completely.

Step 03

In a microwave-safe bowl, heat chocolate chips until melted, stirring until smooth. In another bowl, beat the cream until stiff peaks form. In a separate bowl, beat egg whites with sugar until stiff peaks form. Gently fold the melted chocolate into the whipped cream, then fold in the egg whites. Spread the mousse over the cooled brownie base.

Step 04

Refrigerate for at least 2 hours before slicing into squares and serving. Enjoy your rich, decadent treat!

Nutritional Breakdown (Per Serving)

  • Total Fat: 22g
  • Saturated Fat: 13g
  • Cholesterol: 80mg
  • Sodium: 130mg
  • Total Carbohydrates: 44g
  • Dietary Fiber: 2g
  • Sugars: 30g
  • Protein: 4g