This is a very rich frosting that isn't too sweet. I use to frost cakes as well as pipe onto cupcakes. It pairs really well with yellow cake. I use less milk if I'm going to pipe on cupcakes, so the consistency is firmer. —SweetTooth
What You'll Need
unsalted butter (1 stick), room temperature
In a stand mixer or using a hand mixer, beat butter on high until it's soft, about 30 seconds until soft.
Add cocoa powder and powdered sugar and beat until incorporated
Add the milk a little at a time as you mix. Stop when you get to your desired consistency -- the more milk you add, the softer it will be.
Once you have your desired consistency, beat on high for 3 minutes.