Cook 2 boxes frozen broccoli; place in baking dish. Place 3-4 pieces cooked chicken, cut up, over broccoli layer; 1 can sliced water chestnuts over chicken; 3/4 pound grated cheddar cheese over chestnuts.

1/4 to 1/2 c. mayonnaise
1/2 can chicken broth
1 can mushroom soup

Place over grated cheese. Bake at 350 degrees for 45 minutes, then top with French fried onions. Bake an additional 15 minutes.