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Decadent Chocolate Mousse Brownies served on a plate

Chocolate Mousse Brownies

Indulge in a decadent dessert featuring a rich, fudgy brownie base topped with a light and airy chocolate mousse, creating a perfect balance of textures and intense chocolate flavor.
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Prep Time 40 minutes
Cook Time 30 minutes
Total Time 4 hours
Servings: 12 slices
Course: Dessert, Sweet Treat
Cuisine: American
Calories: 450
Ingredients Equipment Method Notes

Ingredients
  

Brownie Layer
  • 1/2 cup Unsalted butter
  • 1 cup Granulated sugar
  • 2 Large eggs
  • 1 tsp Vanilla extract
  • 1/2 cup All-purpose flour
  • 1/4 cup Unsweetened cocoa powder
  • 1/4 tsp Salt
  • 1/2 cup Chocolate chips
Chocolate Mousse Layer
  • 1 1/2 cups Heavy cream
  • 8 oz Semisweet chocolate melted and cooled
  • 1/4 cup Powdered sugar
  • 1/2 tsp Vanilla extract

Equipment

  • Saucepan
  • Whisk
  • 8x8 inch baking pan
  • Mixing bowls
  • Electric mixer
  • Spatula

Method
 

Brownie Layer
  1. In a saucepan, melt butter and sugar over low heat until sugar is mostly dissolved, then remove from heat.
  2. Whisk in eggs and vanilla until well combined, ensuring the mixture is not too hot to scramble the eggs.
  3. Gradually mix in flour, cocoa powder, and salt until just combined, then fold in chocolate chips.
  4. Pour batter into a greased 8x8 inch pan and bake at 350°F (175°C) for 25-30 minutes, or until a toothpick inserted comes out with moist crumbs. Let cool completely.
Chocolate Mousse Layer
  1. Gently melt semisweet chocolate and let it cool to room temperature.
  2. In a large bowl, whip heavy cream, powdered sugar, and vanilla extract until stiff peaks form.
  3. Gently fold the cooled melted chocolate into the whipped cream until no streaks remain.
Assembly
  1. Spread the chocolate mousse evenly over the cooled brownie layer in the pan.
  2. Refrigerate for at least 3-4 hours, or overnight, until the mousse is set before slicing and serving.

Notes

For best results, ensure all mousse ingredients are chilled. You can adjust the sweetness of the mousse to your liking. Garnish with chocolate shavings or cocoa powder before serving.