In a large bowl, combine butter, peanut butter, and powdered sugar until combined. Fold in the Reese's pieces. Form the mixture into ovals and set onto a plate.
Place the chocolate chips into a microwave-safe bowl, and heat in the microwave in 30-second intervals, stirring well until it is fully melted and smooth.
Coat each peanut butter football in the chocolate and set onto a plate. Decorate with the icing. Let sit until it is completely set.