Easy Keto Peanut Butter Frosting

This smooth and creamy peanut butter frosting is the perfect topping for any cupcake! 

Chocolate Cupcakes with Peanut Butter Frosting- Keto, Low Carb & Gluten Free

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This frosting is smooth, creamy and super easy to make!  My favorite Crazy Richard’s creamy peanut butter is front and center in this frosting.  

Easy Peanut Butter Frosting - Keto and Low Carb

It’s absolutely delicious and go so well with chocolate,  but you can top your favorite cake or cupcakes with this very simple frosting.

What’s in Keto Peanut Butter Frosting

*Exact measurements are listed in the recipe card below.

How to Make Keto Peanut Butter Frosting

Start off with taking your room-temp Mascarpone cheese and butter together in a bowl using a hand mixer.

Add in most of the heavy cream (reserving about a tablespoon) and Swerve confectioners.

Then, in goes the peanut butter and vanilla extract. Mix it until smooth and creamy.

Add more of the heavy cream if needed to get your desired consistency.

The thing that is so lovely about using Mascarpone cheese is it is so velvety and smooth and it has such a wonderful mild flavor, but yet is so incredibly low carb, that it makes the best Keto frosting ever!

If you’ve want to use cream cheese in it’s place you can. but trust me, if you haven’t tried Mascarpone, you definitely want to.

Add the frosting to a piping bag fitted with the tip of your choice (zip lock bag with the tip cut off will work too).

If you don’t have a piping bag, you can use an offset spatula to frost your cooled cupcakes.

Is Peanut Butter Keto?

Peanuts are indeed a legume and it’s debatable whether they are considered Keto friendly. Because they are high in fat and fiber, this makes them an exception to the rule in most cases.

However, when you’re selecting a Keto friendly peanut butter, you want to look for one that says, ” All Natural,” and also indicates there is no sugar added.

Easy Peanut Butter Frosting - Keto and Low Carb

How Carbs in Peanut Butter?

The amount of carbs in peanut butter greatly depends on the brand. All natural, no sugar added peanut butter will have between 4 to 5 net carbs per 2 tbls. sized portion.

Easy Peanut Butter Frosting - Keto and Low Carb

While everyone has their favorite peanut butter brands, I was introduced to Crazy Richard’s some time back and I haven’t used another brand since. Their peanut butter is rich and creamy, has no preservatives, is non GMO and it only has one ingredient…PEANUTS. Check it out along with their other products on their website.

More Keto Peanut Butter Recipes

Easy Peanut Butter Frosting - Keto and Low Carb

More Keto Cupcakes Recipes

If you’d like to know more about baking on Keto, this article, Keto Baking Made Easy, is loaded with tips and info that you’ll find helpful. You might also check out my Keto Sweet Treats eBook that has 50 amazing Keto dessert recipes, all with color pics, macros and more! I’m offering it at 50% off when you subscribe to my free weekly emails here.

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closeup of Peanut Butter Frosting on chocolate cupcake

Easy Keto Peanut Butter Frosting

This smooth and creamy peanut butter frosting is the perfect topping for any cupcake!
4.67 from 3 votes
Author: Julianne
Servings 10
PREP 2 minutes
COOK 3 minutes
TOTAL 5 minutes

Ingredients
 

Instructions
 

  • Whip the mascarpone and butter together in a bowl using a hand mixer. Add most of the heavy cream (reserving about a tablespoon) and sweetener.
  • Then the peanut butter and vanilla extract, mix until smooth and creamy. Add more of the heavy cream if needed, to get your desired consistency.
  • Add the frosting to a piping bag fitted with the tip of your choice (ziplock bag with the tip cut off will work too) and frost your cooled cake or cupcakes.

*Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

Course Dessert
Cuisine American
Calories 204kcal
Nutrition Facts
Easy Keto Peanut Butter Frosting
Amount per Serving
Calories
204
% Daily Value*
Fat
 
21
g
32
%
Saturated Fat
 
11
g
69
%
Carbohydrates
 
2
g
1
%
Fiber
 
1
g
4
%
Sugar
 
1
g
1
%
Protein
 
4
g
8
%
* Percent Daily Values are based on a 2000 calorie diet.

*Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.

© Copyright for Keto Cooking Christian LLC. Please use the share buttons to share on social media, but please do not copy/paste the recipe.

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4.67 from 3 votes

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6 Comments

  1. 4 stars
    If we can, how do we store the frosting for later? Also this frosting is SUPER smooth. I bet it’s because of the choice of cheese used. Usually recipes use cream cheese, but I think I like the mascarpone cheese better. Thanks for this recipe and the bible verse at the end 🙂

    1. I would store it in an airtight container in the fridge. I also typically prefer mascarpone cheese to cream cheese, especially when I don’t want the recipe to be dominated by the flavor of cream cheese, but still want the creaminess. Glad you liked the recipe and scripture 🙂