Sonora Chicken Casserole

4 whole cooked chicken breasts, cut into 1 - inch pieces
1 can condensed cream of mushroom soup
1 can condensed cream of chicken soup
1 can (15oz) chili without beans
1 can(4oz) chilli sauce or taco sauce
1/2 cup milk
1 small onion, chopped fine (1/4cup)
12 corn tortillas
1/2 pound sharp Cheddar cheese, shredded
1/2 pound jack cheese, shredded

Mix together soups, chili, taco sauce, milk and onion.  Tear the
tortillas into small pieces.  Into a large casserole, layer chicken on
bottom , then half the tortillas, then half the sauce, and then half the
cheese.  Repeat this layering, ending with cheese.

Bake in 350 degree oven for about 45 minutes.  Let stand 10
minutes before serving.