King Ranch Chicken

3-4 large chicken breasts boned, boiled, and diced (save chicken broth)
12 corn tortillas cut in half
1 can cream of chicken soup
1 can cream of mushroom soup
1 can Rotel tomatoes with chilies
1 cup chicken broth
2 cups shredded cheese
1 large onion diced

Line a 10" x 13" casserole with 6 of the tortillas. Mix the chicken, soups, tomatoes and chicken broth. Layer half of this mixture over the tortillas. Top with 1/2 of the onion and 1/2 of the cheese. Repeat layers. Bake at 350 for 1 hour.