Chocolate Mousse Brownies Ultimate (Print-Friendly Version)

Fudgy brownies topped with luscious chocolate mousse for an irresistible chocolate delight.

# Ingredients You’ll Need:

→ Brownie Base

01 - 1 cup unsalted butter
02 - 2 cups granulated sugar
03 - 4 large eggs
04 - 1 teaspoon vanilla extract
05 - 1 cup all-purpose flour
06 - 1 cup unsweetened cocoa powder
07 - 1/2 teaspoon salt
08 - 1/2 teaspoon baking powder

→ Chocolate Mousse Topping

09 - 1 1/2 cups heavy whipping cream
10 - 8 ounces semi-sweet chocolate, chopped
11 - 3 large egg whites
12 - 1/4 cup granulated sugar
13 - 1 teaspoon vanilla extract

# How to Make It:

01 - Preheat the oven to 350°F (175°C). Grease a 9×13 inch baking pan with butter or nonstick spray.
02 - Melt unsalted butter in a medium saucepan over medium heat. Once melted, stir in granulated sugar until thoroughly blended.
03 - Remove the pan from the heat and let cool briefly. Whisk in eggs and vanilla extract until the mixture is smooth and glossy.
04 - In a separate bowl, sift together all-purpose flour, unsweetened cocoa powder, salt, and baking powder.
05 - Gradually add the dry ingredients to the butter mixture, stirring until just incorporated. Avoid overmixing to preserve tenderness.
06 - Spread the brownie batter evenly into the prepared baking pan using a spatula.
07 - Place the pan in the oven and bake for 30–35 minutes, or until a toothpick inserted in the center emerges with a few moist crumbs.
08 - Remove brownies from the oven and allow them to cool completely in the pan before proceeding.
09 - In a heatproof bowl, gently melt the semi-sweet chocolate over a double boiler or in short microwave bursts, stirring until smooth. Let cool to room temperature.
10 - In a large mixing bowl, whip the heavy cream until it forms soft peaks.
11 - Using a separate bowl, beat egg whites until foamy. Gradually add granulated sugar and continue beating until stiff peaks are achieved.
12 - Fold the cooled melted chocolate into the whipped cream until well integrated. Carefully fold in the whipped egg whites, taking care not to deflate the mixture.
13 - Spread the chocolate mousse evenly over the cooled brownie layer. Cover and refrigerate for at least 1–2 hours to set before serving.

# Extra Tips:

01 - For clean slices, run a sharp knife under hot water and wipe between cuts.