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Keto Chocolate Mousse Cake

This sugar-free keto chocolate mousse cake is inspired by Red Ribbon and made without a cake base. Rich, creamy, and topped with a light whipped frosting, it’s the perfect low-carb dessert for New Year’s or any special celebration.
Prep Time15 minutes
Chill Time2 hours
Total Time2 hours 15 minutes
Course: Dessert
Cuisine: American
Keyword: Chocolate Mousse, Keto Dessert
Servings: 6

Ingredients

Sugar Free Chocolate Mousse

  • 1 tsp Unflavored Gelatin Powder
  • 1 tbsp Cold Water
  • 2 tbsp Boiling Water
  • 1/3 cup Allulose Powder or ( your preferred Sugar Substitute)
  • 1/4 cup Unsweetened Cocoa Powder
  • 1 cup Heavy Whipping Cream, chilled
  • 1 tsp Vanilla Extract

Sugar Free Whipped Cream Cheese Frosting

  • 1/2 cup Heavy Whipping Cream
  • 8 oz Softened Cream Cheese
  • 1/2 tsp Vanilla
  • 3-4 tbsp Allulose Powder or your preferred Sugar Substitute

Instructions

Chocolate Mousse

  • In a small bowl, add 1 tablespoon of cold water and sprinkle the gelatin powder over it. Let it sit for about 1 minute to bloom.
  • Add 2 tablespoons of boiling water and stir until the gelatin is completely dissolved. Set aside.
  • In a mixing bowl, combine the powdered sugar substitute, cocoa powder, heavy whipping cream, and vanilla.
  • Using a hand mixer, beat the mixture until it becomes thick and forms stiff peaks. Make sure to scrape the sides and bottom of the bowl to fully incorporate everything.
  • Slowly pour in the dissolved gelatin while mixing. Continue beating until everything is fully blended.
  • Pour the mixture into a 6-inch round pan or cake mold and refrigerate until fully set.

Whipped Cream Cheese Frosting

  • In a mixing bowl, beat the softened cream cheese until smooth and creamy. Make sure there are no lumps.
  • Add the sugar substitute and vanilla extract. Continue beating until fully combined and fluffy.
  • In a separate bowl, whip the heavy whipping cream until stiff peaks form.
  • Spread or pipe the frosting over the chilled chocolate mousse.
  • Add shaved sugar-free chocolate on top, or sprinkle with sugar-free chocolate chips for extra texture and flavor. This gives it that classic Red Ribbon–style look.