1) Place beef steak on grid over medium, ash-covered coals. Grill, 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. 2) Meanwhile, whisk all Dressing ingredients in medium bowl until smooth; set aside. Arrange lettuce on serving platter; arrange mango, avocado, carrot and bell pepper over lettuce. 3) Carve steak into slices; season with salt. Arrange beef over salad. Drizzle with dressing. Sprinkle with peanuts, if desired. Serve immediately; squeeze lime wedges over salad, as desired.