Peanut Butter Buttercream Frosting is ultra rich, thick, smooth, and creamy with tons of sweet nutty flavor that goes perfect on so many cakes or cupcakes!
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 again. Add a tablespoon or 2 of powdered sugar if it needs to thicken.
This makes enough frosting for a two layer cake or 24 cupcakes (or 12 cupcakes with a generous amount of frosting).