Saute medium onion in 1/2 stick butter. Cook 1 package broccoli and drain and add:

1 c. uncooked rice
1 c. cooked chicken
1 can cream mushroom soup
1/4 c. water
1/2 c. or more Cheese Whiz
1/2 c. milk

Pour in casserole and bake uncovered 30 to 40 minutes at 350 degrees.