1Set oven control to broil. Place steaks on rack in broiler pan. Brush both sides of steaks with oil; sprinkle with garlic salt.
2Broil with tops 4 to 6 inches from heat, turning once, until of desired doneness (10 to 15 minutes for medium, 160°F).
3Remove broiler pan from oven. Sprinkle steaks with tomatoes, basil and cheese. Broil about 1 minute or just until cheese begins to melt. Serve immediately.