Heat the oil in a 2-quart saucepan over medium heat. Add the onion and cook for 5 minutes or until tender, stirring occasionally.
Stir the soup, milk, chile pepper and tomatoes in the saucepan. Reduce the heat to low. Cook and stir for 3 minutes or until the mixture is hot and bubbling.
Lightly oil the grill rack and heat the grill to medium. Grill the beef fo 15 minutes for medium or to desired doneness, turning the beef over once during grilling. Spoon the soup mixture over the beef and sprinkle with the cilantro, if desired.
1 tablespoon olive oil
2 large white onions, coarsely chopped
1 (10.75 ounce) can Campbell's® Condensed Cheddar Cheese Soup
1/2 cup milk
1/2 teaspoon ground chipotle chile pepper
2 medium tomatoes, coarsely chopped
1 (2 pound) skirt or beef flank steak,
1-inch thick, cut into
1/4 cup chopped fr