Heat grill. In small bowl, combine all butter ingredients; blend well. Set aside. In another small bowl, combine pepper blend and garlic salt; mix well. Rub pepper mixture onto all surfaces of steaks.
When ready to grill, place steaks on gas grill over medium-high heat or on charcoal grill 4 to 6 inches over medium-high coals. Cook 8 to 12 minutes or until of desired doneness, turning once. Serve steaks with butter.