aside in mixing bowl. Grease a 6" deep by 9" round casserole dish. Tear at least four tortillas into large pieces, using them to cover the bottom of the casserole dish. Put 1/3 of the chicken on top of the tortillas. Pour 1/3 of the soup mixture on top of the chicken, then cover with a layer of grated cheese. Repeat the steps with tortillas, chicken, soup mixture and cheese, twice (if your dish isn't deep enough, only make two layers). After last layer of cheese is put on top of casserole, bake in a 325 degree oven for 45 minutes, uncovered. Cheese should be melted and tortillas well-cooked. For spicier palates, more green chilies may be added.