Chocolate Mousse Brownies (Decadent, Fudgy, and Fluffy)
Introduction
Indulge in Chocolate Mousse Brownies, the ultimate dessert for chocolate lovers. These brownies are rich and fudgy at the base, topped with light, airy chocolate mousse, creating the perfect contrast of textures. Perfect for parties, dessert tables, or a cozy night in, this treat is sure to impress anyone with a sweet tooth.🍫
With a simple recipe and common ingredients, you can make a gourmet-style dessert without the fuss. Each bite delivers a melt-in-your-mouth experience, with a smooth mousse layer enhancing the deep chocolate flavor of the brownies.

Chocolate Mousse Brownies
Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C) and line an 8×8-inch pan with parchment paper.
- Mix melted butter, sugar, and cocoa powder until smooth. Add eggs, vanilla, and salt, then fold in flour and chocolate chips.
- Bake for 25–30 minutes until a toothpick comes out with a few moist crumbs. Let cool completely.
- Melt chocolate for mousse. Whip heavy cream with powdered sugar and vanilla, then fold in chocolate until smooth.
- Spread mousse over cooled brownies. Refrigerate at least 1 hour. Garnish and serve.
Notes
Why You’ll Love This Recipe
✅ Fudgy brownies — rich, moist, and chocolaty
✅ Light mousse topping — creamy and airy contrast
✅ Perfect for entertaining — elegant dessert for any occasion
✅ Easy to make at home — no bakery needed
✅ Customizable — add berries, nuts, or chocolate shavings
Ingredients
For the Brownies:
- 1 cup unsalted butter, melted
- 1 cup granulated sugar
- ¾ cup cocoa powder
- 4 large eggs
- 1 tsp vanilla extract
- ½ tsp salt
- 1 cup all-purpose flour
- ½ cup chocolate chips (optional)

For the Mousse:
- 1 cup heavy cream
- ½ cup semisweet chocolate chips
- 1 tsp vanilla extract
- 2 tbsp powdered sugar
Optional for garnish: cocoa powder, chocolate shavings, fresh berries

Step-by-Step Instructions
1. Preheat Oven
Preheat oven to 350°F (175°C). Grease or line an 8×8-inch baking pan with parchment paper.
2. Make the Brownies
In a large bowl, combine melted butter, sugar, and cocoa powder. Mix until smooth. Add eggs, one at a time, then vanilla and salt. Fold in flour and chocolate chips until just combined.
3. Bake the Brownies
Pour batter into prepared pan. Bake for 25–30 minutes or until a toothpick inserted comes out with a few moist crumbs. Let cool completely.
4. Prepare the Mousse
In a heatproof bowl, melt chocolate chips over a double boiler or in the microwave. Let cool slightly. Whip heavy cream with powdered sugar and vanilla until soft peaks form. Gently fold in melted chocolate until smooth and airy.
5. Assemble the Brownies
Spread chocolate mousse evenly over cooled brownies. Refrigerate for at least 1 hour before serving to set.
6. Serve
Cut into squares, garnish with cocoa powder, chocolate shavings, or berries, and enjoy.

Tips & Variations
- Extra fudgy: Reduce flour by 2 tbsp for an even denser brownie.
- Nutty twist: Fold in chopped walnuts or pecans into the brownie batter.
- Flavor variations: Add a teaspoon of espresso powder to the brownie batter for a deeper chocolate flavor.
- Make ahead: Brownies can be baked a day in advance; mousse added before serving.
Storage & Reheating
- Store brownies in an airtight container in the fridge for up to 3 days.
- For longer storage, freeze brownies without mousse for up to 1 month, then add mousse after thawing.
Nutrition (per serving, 1 brownie approx.)
- Calories: 320
- Protein: 5 g
- Carbs: 36 g
- Fat: 18 g
- Fiber: 3 g
- Sugar: 25 g