Preheat the oven to 300F. Spray vegetable coating in a greased 3-qt casserole and line with corn tortillas (about 6) that have been softened in oil. If desired, quarter additional softened tortillas and line the sides of the dish. Split, seed and lay green chilies on top of the tortillas. Sprinkle cheeses on top of green chilies. Mix eggs, flour and milk; beat well. Pour over cheese. Bake at 300F for 30 minutes, then bake 15 minutes more at 325F. Can be served with side dishes of sour cream and picante sauce.