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Dark Chocolate Mousse Brownies Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.8 from 130 reviews
  • Author: Jessica
  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Total Time: 2 hours 45 minutes
  • Yield: 9 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Description

This decadent Dark Chocolate Mousse Brownies recipe combines rich, fudgy brownies with a smooth, silky dark chocolate mousse topping. The contrast of textures and intense chocolate flavor make it an irresistible dessert perfect for chocolate lovers and special occasions.


Ingredients

Scale

Brownie Base

  • 1 box chocolate brownie mix plus ingredients needed on box (or homemade brownie batter equivalent)

Mousse Layer

  • 10 oz dark chocolate, chopped
  • 1 ½ cups heavy whipping cream, divided
  • 1 teaspoon unflavored gelatin
  • 2 tablespoons water


Instructions

  1. Prepare Brownies: Follow the directions on the brownie mix box or your homemade brownie recipe to prepare the batter. Bake as directed, then allow the brownies to cool completely before adding the mousse topping.
  2. Soften Gelatin: In a small dish, combine the unflavored gelatin with 2 tablespoons of water and let it soften, then gently heat the mixture over low heat until the gelatin dissolves completely.
  3. Melt Chocolate: Place chopped dark chocolate in a medium bowl. Heat ½ cup of the heavy whipping cream over medium heat until it reaches a boil, then pour it over the chocolate. Stir gently until the chocolate is fully melted and smooth.
  4. Incorporate Gelatin: Add the dissolved gelatin mixture to the melted chocolate and stir well to combine evenly.
  5. Whip Cream: Whip the remaining 1 cup of heavy whipping cream until soft peaks form.
  6. Combine Mousse: Fold half of the whipped cream into the chocolate mixture gently to lighten it, then fold in the remaining whipped cream carefully until the mixture is smooth and evenly combined.
  7. Assemble: Spread the mousse evenly over the completely cooled brownie base.
  8. Chill: Refrigerate for at least 1 to 2 hours to let the mousse set properly.
  9. Serve: Optionally, grate white chocolate over the mousse for decoration before serving. Slice and enjoy your rich dark chocolate mousse brownies!

Notes

  • Ensure brownies are fully cooled before spreading mousse to prevent melting.
  • Use high-quality dark chocolate for the best flavor.
  • The gelatin ensures the mousse sets firmly; do not skip or substitute.
  • White chocolate garnish is optional but adds a nice visual contrast and sweetness.
  • Store leftovers covered in the refrigerator for up to 3 days.

Nutrition

  • Serving Size: 1 brownie (approx. 1/9th of recipe)
  • Calories: 350
  • Sugar: 28g
  • Sodium: 150mg
  • Fat: 22g
  • Saturated Fat: 13g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 35g
  • Fiber: 3g
  • Protein: 5g
  • Cholesterol: 70mg