Preheat grill to medium-high. Place steaks on hot grill; cook 4-5 minutes. Turn steaks over and brush tops of steaks with soppin’ sauce. Cook 4-5 minutes, turn and brush opposite side with remaining sauce. (Discard any basting sauce not used.) Cook 1-2 minutes, turn over and place a piece of butter on each steak; cook additional 1-2 minutes. Transfer to plates and allow to rest 8-10 minutes. Serve with additional sauce, if desired.