1In shallow baking dish, mix 1/2 cup dressing and the pepper. Add beef; turn to coat. Cover; refrigerate at least 8 hours but not more than 24 hours.
2Heat gas or charcoal grill. In medium bowl, mix all olive salad ingredients. Remove beef from marinade; discard marinade. Place beef on grill over medium heat. Cover grill; cook 10 to 12 minutes, turning once or twice, until desired doneness.
3Cut beef into thin slices. Fill buns with olive salad, tomato, warm beef and cheese.