You can find the original recipe here.
2 cups shredded cooked chicken (I just used two chicken breasts that were left over from my taco chili)
1 cup shredded cheese (I used cheddar)
1 can cream of chicken soup
1/2 cup milk
1/2 cup sour cream
1 can Rotel diced tomatoes (drained)
1/2 packet taco seasoning
1 bag of Doritos
1. Pre-heat oven to 350° F
2. In a mixing bowl, combine all ingredients except Doritos
3. In a greased 2 qt dish, put a layer of crushed Doritos, then a layer of the chicken mixture. Repeat once more, ending with a layer of the chicken mixture. Top with more shredded cheese. Cover. Bake for 30-35 minutes.