Thick Chocolate Buttercream. If frosting is too thick beat in more. Buttercream will at first appear very thin and at some point look like it.
Add the sugar mixture 1 cup at a time to the creamed butter and shortening. If frosting is too thick beat in more. Stir in cocoa powder.
Steps 1 In medium bowl beat powdered sugar and butter with spoon or electric mixer on low speed until blended.
Buttercream will at first appear very thin and at some point look like it. Steps 1 In medium bowl beat powdered sugar and butter with spoon or electric mixer on low speed until blended. Add the sugar mixture 1 cup at a time to the creamed butter and shortening. Beat in butter 1 piece at a time beating until mixture is thickened and smooth.