This casserole is perfect for summer day. You can refresh yourself and full your stomach. You will fell some new level of lightness while eating this dish.All you need is to combine soup, sour cream, chilies, onion and pepper jack cheese together. You will get some cream mix. Continue with chicken pieces.Arrange all this in tortillas. Top with cheese. Bake and eat with sour cream or guacamole.It makes you overjoyed. Casserole in such combination is toothsome.