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close up of piping peanut butter frosting on cupcake
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5 from 3 votes

Peanut Butter Frosting

Using one bowl and just five ingredients, you can whip up a batch of this deliciously easy peanut butter buttercream frosting in just 10 minutes!
Total Time10 mins
Course: Dessert
Cuisine: American
Servings: 24
Calories: 192kcal


  • 1 cup butter softened
  • 1 cup creamy peanut butter room temperature
  • 3 cups powdered sugar up to 4 cups for a stiffer frosting
  • 1 tsp vanilla extract optional
  • ¼-½ tsp salt
  • 1-2 tbsp milk or cream up to ¼ cup if desired


  • Add the softened butter and peanut butter to the bowl of a standing mixer or large bowl with a hand held mixer.
  • Mix on medium to medium high for 2-3 minutes, until the butter and peanut butter is combined. Mixing the butter/peanut butter so long make it really light and fluffy.
  • Add the powdered sugar, ¼ tsp salt, and vanilla and mix on low for a minute until it incorporates. Mixing on low makes sure the powdered sugar doesn’t spill out and get everywhere.
  • Once it’s incorporated, mix on medium high for another 3-4 minutes until it is fluffy again.
  • At this point, gauge the consistency and flavor. If you want it thinner you can add a tablespoon or two of milk or cream. You can also add a bit more salt if you think it needs it. Remix for another minute until combined.


  • This recipe makes about 3-3.5 cups of frosting.
  • For a smooth frosting, use regular smooth peanut butter instead of the natural kind you stir, or crunchy peanut butter.
  • Make sure your butter and peanut butter are both at room temperature so the combine easily. 
  • If your powdered sugar is very stiff or hard, put it through a sifter so there are no lumps in your buttercream. 
  • Test to gauge the consistency and flavor. If the frosting is too thick you can add a tablespoon or two of heavy cream or milk. If it’s too thin, you can add a few more tablespoons of powdered sugar. You can also add more salt if you think the frosting needs it.
  • If you’re looking for a stiffer frosting, you can add up to another cup of powdered sugar. 
  • This frosting will last up to a week in the fridge or up to 3 months in the freezer, making sure to store tightly in an airtight container.
  • More Questions? Check out this American buttercream frosting post for info on storing buttercream and common frosting Q&As such as how much a typical batch of frosting will cover, and how long frosted cakes and cupcakes can sit out. 


Serving: 2tbsp | Calories: 192kcal | Carbohydrates: 17g | Protein: 3g | Fat: 13g | Saturated Fat: 6g | Cholesterol: 21mg | Sodium: 142mg | Potassium: 72mg | Fiber: 1g | Sugar: 16g | Vitamin A: 246IU | Calcium: 7mg | Iron: 1mg