Fluffy, creamy, and full of chocolate! This buttercream frosting is the BEST!
In a stand mixer, beat butter one minute. Then add in powdered sugar gradually while mixer is low, so it won't fly out. Add a tablespoon of milk and extract. Add cocoa powder. Next, add rest of milk. Beat on speed 8 until fluffy.
If you do not have both salted and unsalted butter, go with all unsalted then add in 1/4 teaspoon of salt.