Step 1

In a large mixing bowl or the bowl of a stand mixer with the whisk attachment, whip the butter until very light and fluffy, about 5 minutes.

Step 2

Add the cocoa powder, vanilla, and salt. Mix on low speed until well combined, stopping to scrape down the bowl a couple of times. With the mixer on low, gradually add in the confectioner’s sugar about a cup at a time alternating with a tablespoon of cream. (I like 6 cups of sugar for a smooth and swoopy frosting, but for a stiffer frosting, use up to 8 cups of sugar.) Scrape down the bowl.

Step 3

Increase the speed to medium-low and beat until fluffy and spreadable, about 1 minute. Add additional cream a tablespoon at a time if your frosting feels too thick or stiff. This recipe makes enough frosting for 24 cupcakes or a 9-inch 2-layer cake.