1/2 lb cheddar cheese, shredded
1/2 lb jack cheese, shredded
1 can cream of mushroom soup
1 can chili - no beans
4 chicken breasts (cooked & diced)
4 oz can chopped olives
1/2 cup milk
1 medium onion chopped
4 oz bottle taco sauce
1 dozen corn tortillas

Combine the cheeses; reserve 1 cup. Mix all ingredients, except tortillas and reserved cheese, until well blended. In a well greased 9x13" baking dish, layer the tortillas and chicken mixture. Repeat layers, and top with reserved cheese. Bake at 350 degrees for 45 minutes. Garnish with sour cream.