To make one large enchilada pie, coat the bottom of a 9-inch square glass or ceramic baking dish with 1 cup of the enchilada sauce. Next, add the chicken mixture, followed by the tortillas and the remaining cup of sauce. Sprinkle on the cheese and bake for 20 minutes, or until the cheese is melted and slightly bubbled. Allow to cool for 5 to 10 minutes before serving.