Joanne'S Chicken And Rice Casserole
["2 (1 1/4 lb.) roasted chickens", "1 small onion, minced", "1/2 c. mayonnaise", "2 cans cream of chicken soup", "1 (8 oz.) can water chestnuts, drained and chopped", "1 (14 1/2 oz.) can chicken broth", "1 (6.2 oz.) pkg. long grain and wild rice mix, cooked"]
["Remove chicken from bones, discarding skin and bones. Chop chicken. Stir together chicken and remaining ingredients. Spoon evenly into 2 lightly greased 8 x 8-inch baking dishes (or one 9 x 13-inch dish). Bake at 350\u00b0 for 55 minutes or until thoroughly heated."]
["chickens", "onion", "mayonnaise", "cream of chicken soup", "water chestnuts", "chicken broth"]