keto buttercream frosting
Print Pin
5 from 1 vote

Keto Buttercream Frosting

This keto buttercream is so versatile. It’s smooth, buttery, sweet and totally delicious. I’ve started with a simple vanilla buttercream but feel free to experiment with different flavors.
Course Dessert
Cuisine Gluten Free, Low Carb / Keto
Keyword keto buttercream frosting
Prep Time 5 minutes
Cook Time 10 minutes
Total Time 15 minutes
Servings 6 cupcakes
Calories 149kcal
Author FatForWeightLoss (Aaron Day)



  • 4.5 oz unsalted grass fed butter room temperature
  • 1 cup powdered Lakanto 125 g
  • 1/2 tsp sugar-free vanilla extract
  • almond milk to thin if needed optional


  • Orange - Add the zest of 1 orange and 1/2 tsp orange extract
  • Maple - Replace the vanilla with maple extract
  • Almond - Replace the vanilla with almond extract



  • Cut the butter into small cubes and place in a bowl. Beat with an electric whisk until fluffy. Sift in the powdered Lakanto sweetener and add the vanilla; beat until creamy and combined.
  • For a thinner buttercream, add some almond milk. Adjust the sweetness to taste before using it if necessary. Pipe or spread with a palette knife on your selected dessert.
Need A Keto Shopping List?Check out my keto foods list with free printable pdf and flavour pairings guide.
Nutrition Facts
Keto Buttercream Frosting
Amount Per Serving (1 cupcake frosting)
Calories 149 Calories from Fat 153
% Daily Value*
Fat 17g26%
Saturated Fat 11g69%
Cholesterol 45mg15%
Sodium 149mg6%
Carbohydrates 1g0%
Sugar 1g1%
Protein 1g2%
Vitamin A 521IU10%
Calcium 5mg1%
* Percent Daily Values are based on a 2000 calorie keto diet.
Do You Know Your Macros?Check out my free personalised macro calculator


  • The butter must be at room temperature and soft - If too cold, the buttercream won’t cream.
  • Sweetener choice - Use powdered and see my comments above on sweetness.
  • Pipe whilst fresh - If you need to store the frosting, place it in an airtight Tupperware in the fridge for up to 5 days and allow to come to room temperature naturally before piping. Don’t leave the buttercream out in the open air overnight and then try and pipe, it will curdle… tried and tested!
Tried this recipe?Mention @FatForWeightLoss or tag #fatforweightloss for your chance to be featured!
© Copyright FatForWeightLoss (Aaron Day). I'd love you to share a link to this recipe, but please DO NOT COPY/PASTE the recipe or instructions to social media/websites. Please consider using a photo with a link to this recipe instead.
Stuck On A Weight Loss Plateau?Take my weight loss plateau questionnaire for some simple suggestions