Go Back
Chocolate Mousse Brownies

Chocolate Mousse Brownies

Indulge in layers of rich, fudgy brownies topped with silky chocolate mousse. This Chocolate Mousse Brownies recipe combines the best of both worlds—decadent yet easy to make, perfect for parties or weeknight desserts.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 25 minutes
Cooling & Chilling Time 3 hours
Total Time 3 hours 45 minutes
Ingredients Method Notes

Ingredients
  

  • For the Brownie Layer:
  • ½ cup unsalted butter melted
  • ¾ cup granulated sugar
  • ⅓ cup brown sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • ½ cup all-purpose flour
  • ⅓ cup unsweetened cocoa powder
  • ¼ teaspoon salt
  • ½ teaspoon instant espresso optional
  • ½ cup dark chocolate chips
  • For the Chocolate Mousse Layer:
  • 1 ½ cups heavy whipping cream
  • 1 cup semi-sweet chocolate chips or chopped chocolate
  • 2 tablespoons powdered sugar
  • ½ teaspoon vanilla extract
  • Optional Toppings:
  • Shaved chocolate
  • Cocoa powder
  • Whipped cream or fresh berries

Method
 

  1. Preheat Oven
  2. Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper and grease lightly.
  3. Make the Brownie Batter
  4. In a bowl, whisk together melted butter, granulated sugar, and brown sugar. Add eggs and vanilla, whisking until glossy.
  5. Sift in flour, cocoa powder, salt, and espresso powder. Stir until just combined, then fold in chocolate chips.
  6. Bake the Brownies
  7. Pour batter into the prepared pan. Bake for 20–25 minutes, until edges are set but the center is slightly soft. Let cool completely.
  8. Make the Chocolate Mousse
  9. Heat ¾ cup heavy cream in a saucepan until just simmering. Pour over chocolate chips in a bowl, let sit for 2 minutes, then whisk smooth. Let cool to room temperature.
  10. In another bowl, whip the remaining cream with powdered sugar and vanilla until soft peaks form. Fold into cooled chocolate mixture until airy.
  11. Assemble
  12. Spread mousse evenly over cooled brownies. Smooth the top with a spatula. Chill for 2–3 hours until set.
  13. Serve
  14. Dust with cocoa powder, top with shaved chocolate, or add whipped cream before slicing into squares.

Notes

  • Use high-quality chocolate for richer flavor.
  • Slightly underbake the brownies for an extra fudgy texture.
  • Chill fully before slicing to get clean layers.
  • For a twist, layer crushed cookies between brownie and mousse.