Introduction
These Chocolate Mousse Brownies are the ultimate indulgent dessert — combining a rich, fudgy brownie base, a light and airy chocolate mousse layer, and a silky ganache topping. Each bite melts in your mouth with deep chocolate flavor and creamy texture. Perfect for Valentine’s Day, dinner parties, or any special occasion, these layered brownies are both elegant and easy to make.
Prep Time: 25 minutes
Cook Time: 25 minutes
Chill Time: 2 hours
Total Time: 2 hours 50 minutes
Servings: 12

Ingredients
For the Brownie Base
- ½ cup (115 g) unsalted butter, melted
- 1 cup (200 g) granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ⅓ cup (40 g) unsweetened cocoa powder
- ½ cup (65 g) all-purpose flour
- ¼ teaspoon salt
- ½ teaspoon baking powder
For the Chocolate Mousse Layer
- 1 ½ cups (360 ml) heavy cream
- 1 ½ cups (270 g) semi-sweet chocolate chips
- 2 tablespoons butter
- 1 teaspoon vanilla extract
For the Ganache Topping
- 1 cup (180 g) semi-sweet chocolate chips
- ½ cup (120 ml) heavy cream

Instructions
➜ Step 1: Make the Brownie Base
Preheat oven to 350°F (175°C). Line an 8×8-inch (20×20 cm) baking pan with parchment paper.
In a bowl, whisk together melted butter, sugar, eggs, and vanilla until smooth. Add cocoa powder, flour, salt, and baking powder. Stir until combined.
Pour into the pan and bake for 20–25 minutes, or until a toothpick inserted in the center comes out clean. Let cool completely.
➜ Step 2: Prepare the Chocolate Mousse
In a heatproof bowl, melt chocolate chips and butter together until smooth. Let cool slightly.
In another bowl, whip the heavy cream and vanilla until soft peaks form. Gently fold the whipped cream into the melted chocolate mixture until creamy and smooth. Spread evenly over the cooled brownie base. Chill for at least 1 hour to set.
➜ Step 3: Make the Ganache Topping
Heat heavy cream until just simmering, then pour over chocolate chips. Let sit for 1 minute, then stir until glossy. Pour over the mousse layer and smooth evenly. Refrigerate again for 1 hour or until firm.
➜ Step 4: Slice and Serve
Cut into squares using a warm knife for clean edges. Serve chilled and enjoy the rich, creamy layers.
Pro Tips & FAQ
Can I make these ahead of time?
Yes, these brownies keep beautifully. Store in the refrigerator for up to 3 days or freeze for up to 2 months.
Can I use dark chocolate instead of semi-sweet?
Absolutely! Dark chocolate gives a more intense flavor and pairs wonderfully with the fudgy brownie base.
Can I make these gluten-free?
Yes, simply replace the flour with a 1:1 gluten-free baking blend.

Nutrition Summary
Rich, chocolatey layers with creamy mousse and glossy ganache — pure dessert perfection.
| Serving Size | Calories | Protein | Carbs | Fat | Fiber | Sugar |
|—————|———–|———-|——–|——–|——–|
| 1 brownie | ~380 kcal | ~5 g | ~42 g | ~21 g | ~2 g | ~30 g |
Nutrition facts are estimated and vary by ingredients.
