Chicken and Green Beak Casserole

6oz long grain and wild rice mix
3c cooked and cubes chicken
2 cans french style beans, drained
1 can cream of mushroom
1c mayonnaise
5oz can sliced water chestnuts, drained

cook rice according to box. mix the rest of the ingredients in a bowl, then add cooked rice. pour into a 9x13, greased pan and bake 350 for 60min.