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Decadent Chocolate Mousse Brownies with fudgy base and creamy mousse topping
Michonne Zendaya

Chocolate Mousse Brownies

Chocolate Mousse Brownies are a decadent layered dessert made with a rich fudgy brownie base and a light, fluffy chocolate mousse topping. Perfect for chocolate lovers and special occasions.
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Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Servings: 16 brownies
Course: Dessert
Cuisine: American
Calories: 260
Ingredients Equipment Method Notes

Ingredients
  

  • 1 box fudge brownie mix (plus ingredients required on box: usually oil, water, and eggs)
  • 2 cups semi-sweet chocolate chips
  • 1 ½ cups heavy whipping cream
  • 1 teaspoon vanilla extract

Equipment

  • 9x13-inch baking dish
  • mixing bowls
  • hand mixer or stand mixer
  • saucepan
  • rubber spatula

Method
 

  1. Preheat oven according to the brownie mix instructions. Prepare and bake brownies as directed on the package in a 9x13-inch baking dish. Let them cool completely.
  2. Place chocolate chips in a medium heat-safe bowl. In a saucepan, heat 3/4 cup of the heavy cream until just boiling, then pour it over the chocolate chips. Let sit 2–3 minutes, then stir until smooth and melted. Let cool to room temperature.
  3. In a large mixing bowl, beat remaining 3/4 cup of heavy cream with vanilla extract until stiff peaks form.
  4. Gently fold the cooled chocolate ganache into the whipped cream until fully incorporated to make the mousse.
  5. Spread mousse evenly over the cooled brownies. Refrigerate for at least 1 hour to set.
  6. Slice and serve chilled. Optionally top with whipped cream or chocolate shavings.

Notes

Let the brownies cool completely before adding the mousse layer. Use high-quality chocolate chips for best results. Store leftovers covered in the refrigerator for up to 5 days. Brownies can be made a day ahead for convenience. Optional: top with whipped cream or chocolate shavings before serving.