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Flourless Chocolate Mousse Cake

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  • Author: Emma Delaney
  • Prep Time: 25 minutes
  • Cook Time: 22 minutes
  • Total Time: 3 hours 47 minutes
  • Yield: 8 servings 1x
  • Category: Dessert
  • Method: Baking, Chilling
  • Cuisine: French
  • Diet: Gluten Free

Description

This ultra-decadent flourless cake features a rich chocolate base topped with airy chocolate mousse and a dusting of cocoa powder. Silky, dense, and melt-in-your-mouth smooth, it’s a dreamy dessert for chocolate lovers and elegant dinner parties alike.


Ingredients

Units Scale
  • 7 oz dark chocolate (70%), chopped
  • 1/2 cup unsalted butter
  • 3/4 cup granulated sugar
  • 3 large eggs
  • 1 tsp vanilla extract
  • Pinch of salt
  • 6 oz dark chocolate, chopped
  • 1 1/2 cups heavy cream, divided
  • 2 tbsp powdered sugar
  • 1 tsp espresso powder (optional)
  • Unsweetened cocoa powder, for dusting

Instructions

  1. Preheat oven to 350°F (175°C). Grease and line an 8-inch springform pan.
  2. Melt chocolate and butter together in a bowl over simmering water. Stir until smooth.
  3. Remove from heat, stir in sugar, then whisk in eggs one at a time. Add vanilla and salt.
  4. Pour into pan and bake for 20–22 minutes, until set but soft in the center. Let cool completely.
  5. Heat ½ cup cream until just boiling. Pour over chopped chocolate and espresso powder. Let sit for 2 minutes, then stir until smooth. Cool to room temperature.
  6. Whip the remaining 1 cup cream with powdered sugar to soft peaks.
  7. Gently fold whipped cream into cooled chocolate mixture until light and fluffy.
  8. Spread mousse evenly over cooled cake base.
  9. Chill for at least 3 hours or overnight to set.
  10. Dust the top generously with cocoa powder. Slice with a warm knife for clean cuts.

Notes

  • Use high-quality chocolate for the best flavor and texture.
  • The espresso powder intensifies the chocolate flavor but is optional.
  • For cleaner slices, dip the knife in warm water and wipe between cuts.

Nutrition

  • Serving Size: 1 slice
  • Calories: 420
  • Sugar: 25g
  • Sodium: 60mg
  • Fat: 32g
  • Saturated Fat: 20g
  • Unsaturated Fat: 10g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 3g
  • Protein: 5g
  • Cholesterol: 120mg