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4.5 from 4 votes

Chocolate Mousse Brownies

Chocolate Mousse Brownies are homemade brownies baked and topped with creamy chocolate mousse and chocolate curls.
Prep Time20 mins
Cook Time35 mins
Chill2 hrs
Total Time2 hrs 55 mins
Course: Dessert
Cuisine: American
Keyword: Chocolate Mousse Brownies
Servings: 12
Calories: 509kcal
Author: Amanda Rettke--iambaker.net



  • 4 large eggs, room temperature
  • 2 cups (400g) granulated sugar
  • ¾ cup (170g) butter, melted and cooled slightly
  • 1 tablespoon vanilla extract
  • cups (192g) all-purpose flour
  • cup (43g) Dutch-processed cocoa
  • ½ teaspoon baking powder
  • ¼ teaspoon kosher salt


  • cups heavy cream, cold and divided
  • 1 cup chocolate chips, semi-sweet (or your preference)
  • chocolate curls, for garnish (optional)


  • Preheat oven to 350°F. Spray a 9x13-inch baking dish with nonstick cooking spray and set aside.


  • In a large bowl add eggs, sugar, melted butter, and vanilla. Whisk until all ingredients are fully incorporated.
  • Add in the flour, cocoa, baking powder, and salt. Stir until just combined.
  • Pour brownie batter into the prepared baking dish and bake for 30-35 minutes, or until an inserted toothpick is removed mostly clean. (A few crumbs are good!)
  • Set aside to cool to room temperature.


  • In a microwave-safe bowl, heat ½ cup of the heavy cream for 50 seconds (depending on microwave strength).
  • Add the chocolate chips to the cream and stir until the chocolate has melted. This will take 1-2 minutes. Set aside to cool.
  • Pour the remaining 1 cup of heavy cream into a medium bowl. Using a hand-held or stand mixer, beat until soft peaks form. Continue whipping the cream until stiff peaks form.
  • Fold the cooled chocolate mixture into the whipped cream until combined.
  • Pour the mousse over the cooled brownies and spread it into an even layer. Garnish with chocolate curls (optional).
  • Refrigerate 2 hours (up to overnight) before serving.


Calories: 509kcal