- Butter - Powdered sugar - Cocoa powder - Salt - Vanilla extract - Milk
With a handheld electric mixer or in the bowl of a stand mixer fitted with the paddle or whisk attachment, mix the softened butter until light and creamy, 1-2 minutes.
Add the powdered sugar. Sift the cocoa powder into the bowl.
Mix on low speed, scraping down the sides of the bowl as needed, until the ingredients are mostly combined.