Instructions

1. Cut potatoes crosswise in half; place in microwave-safe dish with 1 cup water. Cover and microwave on HIGH 10 to 14 minutes or until almost tender, rearranging once. Immediately rinse under cold running water; drain well.
2. Meanwhile, combine cumin and salt and pepper; press evenly onto beef steak. Place steak on grid over medium, ash-covered coals. Grill, covered, 12 to 14 minutes (over medium heat on preheated gas grill, 16 to 19 minutes) for medium rare (145°F) doneness, turning occasionally. Do not overcook. 
3. About 5 minutes before steak is done, brush potatoes with some of the vinaigrette. Place on grid around steak. Grill 5 to 7 minutes or until golden brown, turning occasionally.
4. Carve steak into thin slices. Combine beef, potatoes, beans, cilantro and remaining vinaigrette in large bowl; toss gently. Serve immediately.