3 Tablespoons Wilton Meringue Powder 1 lb. (4 cups) confectioners' sugar (about 1lb.) 6 Tablespoons warm water* Beat all ingredients until icing forms peaks (7-10 minutes at low speed with a heavy-duty mixer, 10-12 minutes at high speed with a hand-held mixer). Recipe makes 3 cups.I wondered if you could use the foaming bath butter as an icing.