Chicken Broccoli Casserole

2 chicken breasts, cooked and diced
1 (32 oz.) package frozen broccoli
2 (10.5 oz.) cans cream of chicken soup
1 c. mayonnaise (or less)
½ c. evaporated milk (or regular)
1 to 2 c. grated cheese
1 t. lemon juice
½ to ¾ c. bread crumbs
2-3 t. butter, melted (optional)

Heat oven to 350. Layer chicken, then broccoli in a 9x13 in. pan. Mix soup, mayo, milk, cheese and lemon and pour over chicken and broccoli. Sprinkle bread crumbs and pour melted butter over mixture. Cover with foil. Bake 45 min. Uncover last 10-15 min.