The simplest keto frosting recipe there is. Just 3 ingredients and you have a tasty icing for your favorite keto cakes.
Keto Frosting in a green bowl.

My keto frosting is incredible! I am always fascinated by how creamy, light and fluffy this simple sugar-free frosting recipe really is.

With just 3 ingredients and only 5 minutes, you can make this incredible keto buttercream. With only 1g net carbs per serve, you are going to love this sugar-free frosting.

Why we Love this recipe

Quick and so easy – What I love most about this keto frosting recipe is it is so simple.

Versatile – You can use the frosting on any of your favorite keto cakes. But another great way to use this recipe (or the leftovers) is to scoop it into a mold and make some tasty easy keto fat bombs. Such a perfect way to use up keto buttercream.

Ingredients – Only 3 ingredients that you likely have in your pantry now.

The Ingredients

Keto Frosting ingredients in 3 bowls.

Scroll down to the recipe card for the full recipe, ingredients tips, and method to make the frosting.

Just 3 simple ingredients are all you need to make this keto vanilla buttercream. You can of course add any additional ingredients to flavor it, but for this basic frosting, all you need is the following.

Butter – I use salted butter for my keto frosting recipe. the salt adds a little something extra to the flavour. However, you can use unsalted butter and add a pinch (or more) salt to control the amount of salt in your icing.

Powdered Sweetener – Sukrin Melis is my personal choice of powdered sweetener in this recipe. I find it has little cooling affect and doesn’t affect the flavor of the buttercream. Alternatively, you can make your own powdered sweetener if you cannot source any locally. Jump to the FAQs to see how to make your own powdered keto sweetener at home.

Vanilla Extract – vanilla extract is available in most supermarkets. Alternatively, use the seeds of half of a vanilla bean.

How to Make it

Frosting whipped in a mixer.

Step 1. To make the keto buttercream it is as simple as adding all the ingredients to a mixer or mixing bowl and mixing until the mixture is light and fluffy. I usually mix for 2-3 minutes so that the buttercream is lump-free, smooth, light and fluffy.

Iced cupcakes on a white cake stand.

Step 2. Scoop the mixture into a piping bag and pipe onto the cake, cupcake or your favorite dessert. Alternatively, the frosting can be simply spread over the top of any cake.

I have baked just a few keto muffins and keto cakes in my time. This low carb frosting is perfect to use on any of them. Here are just a few of my best keto cake recipes. (Or check out all of my Keto Sweets. Recipes like our No Bake Keto Cheesecake or Chocolate Cheesecake are both new and incredible. We have so many different desserts!

FAQs and Hot Tips

Can I freeze keto buttercream frosting?

You absolutely can! Freeze on its own or on top of any keto cake. I always ensure anything I am freezing is completely airtight to avoid freezer burn. Defrost in the fridge overnight.

Can I use only regular sweetener in keto frosting?

If you do not have powdered sweetener or can source it locally you will need to mill it to make the sweetener finer. If you use a standard sweetener, it will be grainy and not so nice. To mill the sweetener in a Thermomix or similar simply mill 10 sec/speed 10 until a fine powder forms.

How can I make keto dairy free frosting?

The butter can be replaced with a dairy free alternative. Please check the ingredients of the dairy free spread you use as some may have some nasty ingredients.

Can I make it with cream cheese?

You can make the low carb frosting with cream cheese as well as butter. Simple add 100g of cream cheese to this recipe and continue to mix until a smooth and creamy consistency is achieved.

Keto cupcakes with vanilla frosting on a stand.

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Keto frosting on a green spatula.

Keto Frosting

The simplest keto frosting recipe there is. Just 3 ingredients and you have a tasty icing for your favorite keto cakes.
5 from 11 votes!
Prep Time: 5 minutes
Total Time: 5 minutes
Course: Dessert, keto snack
Cuisine: American
Diet: Diabetic
Recipe Category: Low Carb
Calories: 205kcal
Author: Megan Ellam
Servings: 12 serves
Tap or hover over number to scale ingredients
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  • 1.5 cups (1.5 cups) powdered sweetener (250g) I use Sukrin Melis
  • 1.5 cups (1.5 cups) butter softened, I use salted (185g)
  • 2 teaspoons (2 teaspoons) vanilla extract or paste



  • Mix all buttercream ingredients in a stand mixer until light and fluffy. Pipe or spread over the top of each cupcake


  • Place all ingredients into the mixer; mix 30 sec/speed 5 (for Magimix see the notes). Scrape down the sides of the bowl. Repeat until the frosting is light and fluffy. Pipe or spread over the top of each cupcake.


Store in an airtight container in the fridge for up to 1 week or freeze for up to 1 month.
Magimix Keto Frosting – For the keto buttercream frosting. I just set the Cook Expert to food processor 30 seconds and mix and scrape down the sides as needed until I have a fluffy buttercream.
Thermomix Keto Frosting – The buttercream can be whipped with the butterfly whisk attachment in place too. Please stop the mixer from time to time when making the frosting to scrape the sides down. Continue to mix until very light and fluffy. 
Flavors – to flavor the frosting simply add any of your favorite extracts, zest, unsweetened cacao etc. and mix.
The buttercream may become firm in the fridge to soften simple leave at room temperature until it softens.

Your Own Notes


Serving: 1serve | Calories: 205kcal | Carbohydrates: 1g | Protein: 1g | Fat: 23g | Saturated Fat: 15g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Trans Fat: 1g | Cholesterol: 61mg | Sodium: 204mg | Potassium: 8mg | Sugar: 1g | Vitamin A: 709IU | Calcium: 8mg | Iron: 1mg | Magnesium: 1mg | Net Carbs: 1g
Tried this recipe?Mention @meganellam or tag #madcreations!

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13 responses to “Keto Frosting – Only 1g Net Carbs”

  1. Makhaya

    5 stars
    Love finding delicious keto friendly options like this! The frosting was delicious!

  2. Jere Cassidy

    5 stars
    I don’t eat keto, but I am always interested in what ingredients are used. The powdered sweetener sounds interesting and the buttercream looks totally delicious.

  3. Tyanne

    5 stars
    I love that this recipe is keto! I had no idea that was how keto frosting is made.

  4. Andrea

    5 stars
    this frosting is the best! love that its keto also!

  5. Jan

    Thank you for an easy low carb frosting recipe. This was exactly what I needed, worked out well.

  6. Michele

    5 stars
    This frosting was so delicious… really made my carrot cake extra special!

    1. Megan Mad Creations Hub


  7. Michelle | Taste As You Go

    This frosting is simple and delicious! I also use salted butter when making my buttercream because I find the salt helps bring out the flavor of vanilla. So, so good!

    1. Megan Mad Creations Hub

      I am so happy you enjoyed it Michelle.

  8. Amanda Dixon

    5 stars
    This frosting is great! It has just the right sweetness and pipes beautifully.

    1. Megan Mad Creations Hub

      Awesome to hear!

  9. Andrea White

    5 stars
    How pretty! I have a friend who is doing keto who would absolutely love these!

  10. Alexandra

    5 stars
    I love how simple it is to make this delicious keto frosting. It is so good to have a keto option available – my best friend is doing keto and she will love this recipe too!

5 from 11 votes (3 ratings without comment)

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