my favorite flavor. i personally would have preferred to top some vanilla cupcakes with this creamy peanut butter frosting, but i knew that chocolate would be a bigger hit.
at the end of the day though, the real star of the show was the frosting. seriously, this frosting was so good that i could, and probably did, eat it with a spoon. i still want to try it with a perfect vanilla cupcake though - now that sounds like heaven to me!
mix the powdered sugar, peanut butter, butter, vanilla and salt in a large bowl with a mixer on medium-low speed until creamy, scraping down the bowl with a rubber spatula 