Savor the fresh, fragrant tastes of the Middle East. Top Sirloin gets a sweet-and-savory rubdown before hitting the grill, where it’s surrounded by hearty eggplant and onion.
Combine Rub ingredients. Press 2 tablespoons evenly onto beef steak; set aside. Brush vegetables with oil and sprinkle evenly with remaining rub.
Place steak in center of grid over medium, ash-covered coals; arrange eggplant and onion around steak. Grill steak, covered, 11 to 15 minutes (over medium heat on preheated gas grill, 13 to 16 minutes) for medium rare (145°F) to medium (160°F) doneness, turning occasionally. Grill eggplant 6 to 8 minutes; onions 12 to 15 minutes (gas grill times remain the same) or until tender, turning occasionally.
Cut vegetables into bite-size pieces. Carve steak into slices; then cut slices crosswise in half. Arrange beef and vegetables on serving plates. Season with salt and pepper, as desired. Evenly divide beef and vegetables among flatbreads; garnish with Toppings, as desired.