Peanut Butter Buttercream Frosting is ultra-rich, thick, smooth, and creamy with tons of sweet peanut butter flavor. Perfect on cakes, cupcakes, brownies, and more!
In the bowl of an electric mixer fitted with the paddle attachment, beat the butter and peanut butter on medium-high speed until light and fluffy, scraping down the sides and bottom of the bowl as needed. Add the vanilla, salt, and powdered sugar and continue beating until the frosting is smooth and fluffy, about another 3 minutes.
STORAGE:
Transfer to an airtight container and store in the fridge for up to a week or in the freezer for up to 3 months. Let come to room temperature and re-whip in the stand mixer until light and fluffy before using. Add a tablespoon or 2 of powdered sugar to thicken if needed.
Notes
This makes enough frosting for a two layer cake or 24 cupcakes (or 12 cupcakes with a generous amount of frosting).