Chicken Enchilada Casserole
["6 to 9 chicken breast halves", "3 cans cream of mushroom soup", "2/3 c. reserved chicken broth", "1 pkg. taco seasoning mix", "1 medium onion, chopped", "1 lb. mild Cheddar cheese, grated", "12 corn tortillas"]
["Boil chicken.", "Reserve 2/3 cup broth.", "Bone and coarsely shred chicken and set aside."]
["chicken", "cream of mushroom soup", "chicken broth", "taco seasoning mix", "onion", "Cheddar cheese", "corn tortillas"]