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The BEST Chocolate Mousse Brownies


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  • Author: Paula
  • Total Time: 3 hours 30 minutes
  • Yield: 12 servings
  • Diet: Vegetarian

Description

A decadent layered dessert with a rich brownie base, creamy chocolate mousse filling, and a smooth ganache topping.


Ingredients

  • 1/2 cup (115g) unsalted butter, melted
  • 1 cup (200g) granulated sugar
  • 2 large eggs
  • 1 tsp vanilla extract
  • 1/3 cup (40g) unsweetened cocoa powder
  • 1/2 cup (65g) all-purpose flour
  • 1/4 tsp salt
  • 1/4 tsp baking powder
  • 1 1/2 cups (350ml) heavy whipping cream, chilled
  • 8 oz (225g) semisweet chocolate, finely chopped
  • 3 tbsp (45ml) milk
  • 2 tbsp (25g) powdered sugar
  • 4 oz (115g) semisweet chocolate, finely chopped
  • 1/2 cup (120ml) heavy cream

Instructions

  1. Preheat the oven to 350°F (175°C) and line an 8×8-inch pan with parchment paper. In a bowl, whisk together the melted butter, sugar, eggs, and vanilla until smooth. Sift in cocoa powder, flour, salt, and baking powder. Gently fold until just combined. Pour into the prepared pan, spread evenly, and bake for 20–25 minutes. Cool completely in the pan.
  2. Heat milk in a saucepan until steaming. Pour over chopped chocolate and let sit 2 minutes. Stir until smooth, then cool to room temperature. In another bowl, whip heavy cream with powdered sugar until soft peaks form. Gently fold in the cooled chocolate mixture. Spread mousse over the cooled brownie base and refrigerate for at least 2 hours.
  3. Heat the cream until simmering, pour over chopped chocolate, and let sit for 2–3 minutes. Stir until smooth. Pour the ganache over the mousse layer and smooth evenly. Chill for another hour until the ganache is set. Slice and serve chilled.

Notes

  • Ensure the brownie base is completely cool before adding the mousse layer to prevent melting.
  • Use good-quality chocolate for the mousse and ganache for the best flavor.
  • Chill each layer thoroughly as stated to achieve the best texture and presentation.
  • Prep Time: 30 minutes
  • Cook Time: 3 hours
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 350
  • Sugar: 22g
  • Sodium: 140mg
  • Fat: 22g
  • Saturated Fat: 14g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 38g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 70mg