Prepare as directed, omitting the oven-baking step. After topping the hot cooked vegetable mixture with cheese, cover skillet then remove from heat. Let stand 5 to 10 min. or until cheese is melted.
Substitute 1 red bell pepper for 1 of the poblano chiles.
Flour tortillas are traditionally served with this dish, which originates in the Northern Mexican state of Chihuahua.