Source: Martha Stewart Living, January 2004
- 2/3 cup natural, creamy peanut butter
- 8 tablespoons (1 stick) unsalted butter, softened
- 3/4 cup confectioners' sugar
- Fine salt (optional)
Cream peanut butter and butter in the bowl of an electric mixer fitted with the paddle attachment on high speed. On low speed, mix in sugar until combined, then beat mixture on high speed until fluffy and smooth, about 3 minutes. Add salt to taste, if desired. Use immediately.