1 boneless beef top sirloin steak(about 1 inch thick and about 1-1/4 lbs.)
For marinade, combine Wish-Bone® Italian Dressing, wine, onion, garlic and oregano. Pour 1/2 cup marinade over peppers and mushrooms and another 1/2 cup marinade over steak in two separate large, shallow nonaluminum baking dishes or plastic bags; turn to coat. Cover, or close bags, and marinate in refrigerator 30 minutes. Refrigerate remaining marinade.
Remove steaks and vegetables from marinades, discarding marinades. Grill or broil steak and vegetables, turning occasionally and brushing frequently with refrigerated marinade, 17 minutes or until steak is desired doneness and vegetables are tender. To serve, carve steak. Garnish steak and vegetables with crumbled Feta or goat cheese.