Buttery, sweet and creamy this is my favorite chocolate frosting recipe! Made with only 6 ingredients it's the best for birthday cakes, cupcakes and more.
In a large bowl , stir together the cocoa powder, 1 cup powdered sugar, and salt. Mix in the water and vanilla on medium speed, scraping the bowl if necessary.
Beat in the butter and remaining 2 cups powdered sugar on medium-high speed 1 to 2 minutes, or until pale and fluffy. If frosting is too stiff, beat in 1 teaspoon water until it's spreadable.
Using an offset spatula or rubber spatula, spread enough frosting to create a crumb coat around the entire cake. Chill 30 minutes.
Decorate the cake with the remaining frosting any way you would like.
Notes
Cocoa powder: For a more bittersweet chocolate flavor, use Dutch-process cocoa if you like.