Caramel / Brown Butter Frosting

Makes enough for one 8-inch cake

* 12 tablespoons (1 1/2 sticks) unsalted butter
* 1 package (16 ounces) confectioners' sugar
* 1/2 cup heavy cream, plus more if needed
* 1 tablespoon pure vanilla extract
* Pinch of salt

Directions

1. In a small saucepan, melt butter over medium-high heat until nut-brown in color, about 8 minutes. Remove pan from heat and pour butter into a bowl, leaving any burned sediment behind; let cool.
2. In the bowl of an electric mixer fitted with the paddle attachment, add confectioners' sugar, vanilla, salt, and butter. With the mixer on low, slowly add cream; beat until smooth. If frosting seems too thick, stir another tablespoon cream into the mixture.

http://www.marthastewart.com/recipe/caramel-frosting