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+ servings
peanut butter fluff in a jar with chocolate chips
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4.64 from 36 votes

Keto Peanut Butter Mousse

This deliciously easy Keto Peanut Butter Mousse recipe will make you forget you are following a low carb diet. It's one of my favorite keto desserts to make! It is the perfect light and fluffy alternative to those dense fat bombs! At just 2g net carbs per servings and 5 simple ingredients, it's hard to resist!
Prep Time15 mins
2 hrs
Total Time2 hrs 15 mins
Course: Dessert
Cuisine: American
Keyword: Peanut Butter Fat Bomb
Servings: 6
Calories: 169kcal
Author: Kasey Trenum



  • In a medium-sized bowl, beat heavy whipping cream until it almost doubles in size. Set aside.
  • In a separate bowl, add the softened cream cheese, natural peanut butter, Swerve Confectioners (or Monkfruit Powdered), and vanilla then beat with a mixer until the peanut butter fluff is smooth and creamy.
  • Add the whipped cream to your peanut butter mixture and fold it in gently using a rubber spatula. Try to keep as much air in the mousse as possible. Mix until combined.
  • Grate unsweetened chocolate shavings on top or add Lily's Chocolate Chips over top. (This is optional, but it really makes it tastes so amazing!)
  • Serve right away or refrigerate overnight. (I think it is best kept in the refrigerator overnight and served the next day!)



The sugar alcohols from Swerve are not included in the nutritional information since most subtract sugar alcohols to calculate net carbs. 
Sweetener Alternatives:
Other than Swerve Confectioners, you can use Lakanto Monk Fruit Powdered, since both have a 1:1 ratio. I also highly recommend using Besti Monk Fruit with Allulose powdered sugar. Out of all the sweeteners that I have tried, this one has the least amount of bitter aftertaste.
You can serve your mousse in small bowls or portion out your servings into jars.


Calories: 169kcal | Carbohydrates: 2g | Protein: 3g | Fat: 16g | Saturated Fat: 8g | Cholesterol: 47mg | Sodium: 95mg | Potassium: 79mg | Sugar: 1g | Vitamin A: 545IU | Calcium: 34mg | Iron: 0.2mg