My Favorite Caramel Frosting
1 cup (2 sticks) unsalted butter
1. Melt butter in a 3-quart, saucepan over medium heat. Add brown sugar; bring to a boil, stirring constantly. Stir in whipping cream and vanilla; bring to a boil. Remove from heat, and let cool 1 hour. Transfer frosting to a bowl.
2. Sift powdered sugar into frosting. Beat at high speed with an electric mixer until creamy and spreading consistency.