Chocolate Mousse Brownies

Name: Chocolate Mousse Brownies
Prep time: 30 min
Cook time: 25 min
Total time: 55 min
Yield: 16 servings
Ingredients: 1 cup unsalted butter; 2 cups sugar; 4 large eggs; 1 teaspoon vanilla extract; 1 cup all-purpose flour; 1/2 cup cocoa powder; 1/4 teaspoon salt; 1 cup heavy cream; 8 oz bittersweet chocolate, chopped; 1/4 cup sugar; 1 teaspoon vanilla extract; 3 large egg whites; Pinch of salt

Highlighted under: Baking & Desserts

Experience a decadent delight with these Chocolate Mousse Brownies, featuring rich layers of fudgy brownie and creamy chocolate mousse. This recipe is perfect for your holiday gatherings, delivering a luxurious dessert that will impress your guests and satisfy your sweet tooth. Easy to make and beautifully layered, these brownies are a festive treat that will steal the show at any Christmas cookie exchange.

Created by

Violet Hart

Last updated on 2025-11-23T06:47:14.229Z

These Chocolate Mousse Brownies are not just a dessert; they are a celebration of chocolate in its most indulgent form!

The Perfect Holiday Dessert

Looking for a dessert that will wow your guests during the holiday season? Chocolate Mousse Brownies are a sophisticated yet approachable choice that combines two beloved treats into one indulgent dessert. The rich, fudgy brownie base pairs perfectly with the airy chocolate mousse, creating a delightful contrast of textures that will leave everyone asking for seconds. Whether for a holiday party or a family gathering, these brownies are sure to become a tasty tradition.

Not only are these Chocolate Mousse Brownies delicious, but they are also visually stunning. The layers of dark brownie and light mousse create an eye-catching presentation that is as impressive as it is tasty. Serve them on a festive platter or dress them up with a sprinkle of powdered sugar and fresh berries for a beautiful finish. Your guests will be captivated from the first glance to the last bite.

Tips for Success

To achieve the perfect brownie layer, make sure not to overbake. Check for doneness a few minutes before the timer goes off by inserting a toothpick; a few moist crumbs stuck to the toothpick means they're perfectly done. Remember to let the brownies cool completely before adding the mousse layer – this will prevent it from melting and will help you create clean, beautiful layers.

When making the mousse, using high-quality chocolate makes all the difference. Choose a bittersweet chocolate that you enjoy eating on its own for the best flavor. Also, ensure that your mixing bowls are clean and dry before whipping the egg whites; any grease can prevent them from aerating properly, which is critical for achieving that light and fluffy mousse.

Ingredients

Brownie Layer

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

Mousse Layer

1 cup heavy cream
8 oz bittersweet chocolate, chopped
1/4 cup sugar
1 teaspoon vanilla extract
3 large egg whites
Pinch of salt

Gather all your ingredients to ensure a smooth baking process.

Instructions

Prepare the Brownie Layer

Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking pan.

In a large saucepan over medium heat, melt the butter. Remove from heat and stir in sugar, eggs, and vanilla. Beat in flour, cocoa, and salt until just combined. Spread the batter in the prepared pan.

Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean. Let cool.

Make the Mousse Layer

In a saucepan, heat the heavy cream until just simmering. Remove from heat and add the chopped chocolate, stirring until melted and smooth. Let cool slightly.

In a separate bowl, beat the egg whites with a pinch of salt until soft peaks form. Gradually add sugar and continue to beat until stiff peaks form.

Fold the chocolate mixture into the egg whites until no streaks remain. Pour the mousse over the cooled brownie layer.

Chill and Serve

Refrigerate the brownies for at least 2 hours, or until set. Cut into squares and serve chilled. Enjoy!

Make sure to clean up while your brownies chill!

Storing and Freezing

These Chocolate Mousse Brownies can be stored in the refrigerator for up to a week, making them a fantastic make-ahead dessert option. Just ensure they are covered with plastic wrap or housed in an airtight container to maintain their freshness. With the rich flavors and textures, these brownies can be just as delightful a few days post-baking.

If you find yourself with leftovers or want to prepare them in advance, you can also freeze these brownies. Cut them into squares and wrap each piece tightly in plastic wrap, then place them in a freezer-safe container or bag. They will keep well in the freezer for up to three months. When ready to enjoy, simply thaw in the refrigerator overnight.

Serving Suggestions

Serve these brownies chilled to fully appreciate the contrast between the dense brownie and the fluffy mousse. For an extra special touch, consider pairing them with a dollop of whipped cream or a scoop of vanilla ice cream on the side. Fresh raspberries or strawberries also make a beautiful accompaniment, adding a pop of color and tartness that complements the richness of the chocolate.

For those who love to impress, consider drizzling the brownies with a homemade chocolate sauce or caramel before serving. This adds an additional layer of flavor and decadence. Don’t forget to sprinkle some sea salt on top to enhance the chocolate flavor and provide a touch of sophistication that elevates your dessert to a whole new level.

Questions About Recipes

→ Can I use other types of chocolate?

Yes, you can substitute with milk chocolate or white chocolate according to your preference.

→ How do I store leftovers?

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