Adapted from The Cake Mix Doctor, by Anne Byrn
1 stick butter at room temperature
2/3 cup unsweetened cocoa
3 cups confectioners’ sugar, sifted
2 teaspoons pure vanilla extract
Combine butter and cocoa in a large bowl and blend on low, with electric mixer until combined-about 30 seconds.
Add sugar, milk and vanilla. Beat on medium until fluffy, about 2-3 minutes.
Frost the cake and enjoy!