Mexican Dorito & Chicken Casserole

Preheat oven to 350. In a large bowl, mix together cooked, cubed chicken, 1 cup shredded cheese, cream of chicken soup, milk, sour cream, undrained Rotel, & 1/2 packet taco seasoning. Mix well. Grease a 9 x 13 casserole dish. Add a layer of crushed Doritos in the bottom of the pan. Layer about 1/2 of the chicken mixture evenly across the top. Add another layer of the crushed Doritos, then the rest of the chicken mixture. Top with the remaining shredded cheese. Spray foil with non-stick spray. Cover casserole dish, spray side down (to prevent cheese from sticking). Bake for 30 minutes until bubbling and hot. Remove from oven, remove foil and top with shredded lettuce & diced tomato.