This 5-ingredient Peanut Butter Frosting is the perfect buttercream for all of your cakes and cupcakes. It is light, fluffy, silky smooth, sweet but not too sweet. You may want to eat it straight from the bowl!
Add softened cubed butter, peanut butter, cream, vanilla extract and powdered sugar to the stand mixer bowl.
Stir to incorporate all of the ingredients, then increase the mixer speed gradually to high and beat until the frosting is lighter in color and fluffy, about 5 - 15 minutes
Notes
This recipe yields approximately 5 cups of frosting.
Enough to frost an 8 inch 3-layer cake or about 18 cupcakes generously.
You could probably frost 24 cupcakes without piling the frosting too high.
If you want a stiffer buttercream, you can add more powdered sugar. But I find this frosting will pipe perfectly fine. If the frosting seems a bit runny, you can refrigerate to let it stiffen up slightly before piping.