chicken Broccoli Casserole

2 chicken breast 1 pkg. frozen broccoli cuts 1 can cream of chicken or mushroom soup 1/2 c. mayonnaise 2 c. grated cheddar cheese 1/4 c. chicken broth 2 c. cracker crumbs 1/2 stick butter melted
Boil chicken in salted water until tender. Cut into bite size pieces. Steam broccoli just until tender. Mix soup, mayo, and cheese. Spray a 9x13 inch pan with cooking spray. Spread broccoli over bottom. Top with chicken. Spread soup mix over top. Mix butter with crumbs and spread over top. Bake at 350 for 30 minutes.