Chocolate Mousse Brownies

Highlighted under: Baking & Desserts

Experience the ultimate chocolate delight with these Chocolate Mousse Brownies. This decadent dessert features rich, fudgy brownies topped with a silky-smooth chocolate mousse layer, creating a perfect harmony of textures and flavors. Perfect for gatherings or a sweet treat at home, these brownies will satisfy any chocolate craving and impress your guests.

Evelyn Parker

Created by

Evelyn Parker

Last updated on 2025-11-14T13:05:40.073Z

These Chocolate Mousse Brownies are not just a dessert; they are an experience. Each bite brings together a rich brownie base with a light and airy mousse topping, making them irresistible.

The Perfect Blend of Flavors

These Chocolate Mousse Brownies are the epitome of dessert indulgence, skillfully merging the intense flavors of chocolate with a variety of textures. The fudgy brownie base offers a rich, dense foundation that complements the light and airy chocolate mousse topping. Each bite is a delightful contrast, balancing the soft and creamy mousse with the chewy brownie, creating a luscious experience for chocolate lovers.

What truly elevates this dessert is the choice of chocolate. Semi-sweet chocolate provides a deep and satisfying flavor that enhances the overall taste profile. When melted and folded with whipped cream and egg whites, it transforms into a mousse that is both light and decadent, making it the perfect crown for your brownies.

A Showstopper for Any Occasion

Whether you're hosting a party or simply indulging on a quiet night at home, these brownies are guaranteed to impress. The elegant presentation of the mousse layered atop the brownies is not only visually appealing but also showcases the effort put into making this exquisite dessert. Perfect for birthdays, holidays, or even just a weekend treat, they are sure to elicit compliments from everyone who tries them.

Additionally, the versatility of Chocolate Mousse Brownies makes them suitable for various occasions. You can enhance them with toppings like fresh berries, a dusting of powdered sugar, or a drizzle of chocolate sauce, allowing you to personalize the dessert for your event or personal taste.

Easy to Make, Hard to Resist

One of the best things about this recipe is its simplicity. Despite the gourmet results, the steps are straightforward and manageable, making it accessible for both beginner and experienced bakers. The combination of melting chocolate and whipping cream can be done in a matter of minutes, while the brownie base requires minimal ingredients and effort.

Once you've mastered this recipe, you might find yourself returning to it time and again. The rich and creamy chocolate mousse paired with the brownie base is a classic combination that never goes out of style, perfect for satisfying that sweet tooth during any time of the year.

Ingredients

Gather your ingredients:

Brownie Base

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

Chocolate Mousse Topping

  • 8 ounces semi-sweet chocolate, chopped
  • 1 cup heavy whipping cream
  • 3 large egg whites
  • 1/4 cup granulated sugar
  • 1 teaspoon vanilla extract

Make sure to have everything measured and ready to go!

Instructions

Follow these steps to create your brownies:

Prepare the Brownie Base

Preheat your oven to 350°F (175°C). In a medium saucepan, melt the butter over low heat. Stir in the granulated and brown sugars until combined. Remove from heat and allow to cool slightly before whisking in the eggs and vanilla.

Mix in the flour, cocoa powder, and salt until just combined. Pour the mixture into a greased 9x13 inch baking dish and bake for 25-30 minutes. Let it cool completely.

Make the Chocolate Mousse

Melt the chopped chocolate in a heatproof bowl set over a pan of simmering water. Remove from heat and let cool slightly. In a mixing bowl, whip the cream to soft peaks and set aside.

In another bowl, beat the egg whites with sugar until stiff peaks form. Fold the melted chocolate into the egg whites, then gently fold in the whipped cream until fully combined.

Assemble the Brownies

Spread the chocolate mousse over the cooled brownie base, smoothing it out evenly. Refrigerate for at least 2 hours or until the mousse is set.

Once set, slice your brownies and enjoy!

Storage Tips

To maintain the freshness and quality of your Chocolate Mousse Brownies, store them in an airtight container in the refrigerator. This not only extends their shelf life but also keeps the mousse firm and the brownie base moist. When stored properly, these brownies can last up to a week, although they are likely to be devoured much sooner.

For best results, allow the brownies to come to room temperature before serving. This enhances the flavors and provides a delightful contrast of temperatures between the fluffy mousse and the fudgy brownie.

Ingredient Substitutions

If you're looking to make these brownies gluten-free, you can easily substitute all-purpose flour with gluten-free flour blends. Ensure that the blend you choose works well in baking for optimal results. Similarly, you can experiment with alternative sweeteners if you want to reduce sugar without sacrificing the sweet indulgence of this treat.

For a dairy-free version, consider using dairy-free chocolate for the mousse and coconut cream or almond milk cream as a substitute for heavy whipping cream. These alternatives can still produce a rich, creamy texture that stays true to the original recipe.

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Questions About Recipes

→ Can I make these brownies ahead of time?

Yes, they can be made a day in advance. Just keep them refrigerated.

→ What type of chocolate should I use?

We recommend using high-quality semi-sweet or dark chocolate for the mousse.

Chocolate Mousse Brownies

Experience the ultimate chocolate delight with these Chocolate Mousse Brownies. This decadent dessert features rich, fudgy brownies topped with a silky-smooth chocolate mousse layer, creating a perfect harmony of textures and flavors. Perfect for gatherings or a sweet treat at home, these brownies will satisfy any chocolate craving and impress your guests.

Prep Time15.0
Cooking Duration25.0
Overall Time40.0

Created by: Evelyn Parker

Recipe Type: Baking & Desserts

Skill Level: Intermediate

Final Quantity: 12.0

What You'll Need

Brownie Base

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

Chocolate Mousse Topping

  1. 8 ounces semi-sweet chocolate, chopped
  2. 1 cup heavy whipping cream
  3. 3 large egg whites
  4. 1/4 cup granulated sugar
  5. 1 teaspoon vanilla extract

How-To Steps

Step 01

Preheat your oven to 350°F (175°C). In a medium saucepan, melt the butter over low heat. Stir in the granulated and brown sugars until combined. Remove from heat and allow to cool slightly before whisking in the eggs and vanilla.

Mix in the flour, cocoa powder, and salt until just combined. Pour the mixture into a greased 9x13 inch baking dish and bake for 25-30 minutes. Let it cool completely.

Step 02

Melt the chopped chocolate in a heatproof bowl set over a pan of simmering water. Remove from heat and let cool slightly. In a mixing bowl, whip the cream to soft peaks and set aside.

In another bowl, beat the egg whites with sugar until stiff peaks form. Fold the melted chocolate into the egg whites, then gently fold in the whipped cream until fully combined.

Step 03

Spread the chocolate mousse over the cooled brownie base, smoothing it out evenly. Refrigerate for at least 2 hours or until the mousse is set.

Nutritional Breakdown (Per Serving)

  • Total Fat: 20g
  • Saturated Fat: 12g
  • Cholesterol: 90mg
  • Sodium: 150mg
  • Total Carbohydrates: 45g
  • Dietary Fiber: 3g
  • Sugars: 30g
  • Protein: 4g