Step 1

Using an electric mixer, beat the butter until fluffy, about 5 minutes.

Step 2

Place the confectioners' sugar and cocoa powder in a fine mesh strainer or sifter. Sift over the bowl with the butter. Beat on medium speed until combined.

Step 3

Add the vanilla and 2 Tablespoons milk, and beat for a minute, until fluffy. Add more milk if a thinner consistency is desired.

Step 4

Transfer to a frosting bag with tip and frost away!