Directions

1. Sprinkle steaks evenly with garlic pepper. Cover and set aside.
2. Preheat grill to high direct heat (400°F to 450°F). Meanwhile, blend butter, tarragon and Worcestershire in small bowl. Cover and set aside.
3. Combine onion and garlic on one end of a 12x6-inch sheet of heavy-duty aluminum foil. Drizzle with olive oil. Fold foil over to enclose onion mixture, forming a 6-inch square package; crimp to seal loosely.
4. Place steaks and foil packet on grill. Grill steak, covered, 4 to 6 minutes per side or to desired doneness. Remove foil packet after 5 minutes. Open packet and cool slightly.
5. Remove steaks from grill. Stir onion mixture into butter mixture. Serve steaks topped with butter.