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Chocolate mousse frosting in a bowl with a spoon.

Fluffy Chocolate Mousse Frosting with Melted Chocolate

This fluffy Chocolate Mousse Frosting is the perfect blend of fluffy, creamy goodness with deep, indulgent chocolate flavor and is ready in under 20 minutes. Made with melted chocolate, butter, and powdered sugar, it’s thick and creamy – almost like a dreamy chocolate whipped cream. Perfect for spreading over cakes or cupcakes—or sneaking a spoonful on its own.
Prep Time 20 minutes
Total Time 20 minutes
Servings 32
Calories 122kcal

Ingredients

  • 2 cups powdered sugar
  • 2 eggs
  • ½ cup whole milk
  • teaspoon salt
  • 8 oz bitter chocolate 60% Cocoa, chopped
  • 1 cup butter room temp
  • 1 teaspoon vanilla

Instructions

  • Heat a saucepan with water over medium heat. In the bowl of an electric mixer, add powdered sugar, eggs, milk and salt. Whisk together and place over the simmering water. Whisk until the egg mixture reaches 160º, about 7-9 minutes.
  • Remove from the heat and add the butter, whisking until it has melted. Add chopped chocolate, whisking until it is smooth then whisk in the vanilla.
  • Place the bowl in a bowl of ice water and let it cool. It should be cool to the touch and slightly thick, about 60º. With the whisk attachment, beat the chocolate mixture on medium-high for about 5 minutes until stiff peaks form. Refrigerate to thicken before piping.

Notes

  • You will need to refrigerate this frosting  if you are going to pipe it. 
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