Cooks Note: To butterfly a chicken breast, position a long thin knife horizontally and slide sideways through one side of the chicken piece without cutting all the way through so as to leave a 'hinge' along one side. Open the chicken breast as you would a book, positioning the hinge in the middle. You can place the chicken between layers of wax paper or plastic wrap and pound thin with a heavy pan or the side of a cleaver to make the piece even thinner for rolling and stuffing.