Chicken Enchilada Casserole from Food.com: This recipe appears by special request. Creamy chicken and green chilies I use the regular sized tortillas.. not the large ones.I overlap the tortillas to make the layer. I make it up in an oblong serving dish, I think it is about a 9 1/2 inch by 11 inch pan. But any size you would put 1 full cake mix into will work well . I love this recipe.