Broccoli Rice Casserole -Grandma Great

1 small onion, chopped

1/2 cup chopped celery

10 oz. frozen chopped celery

1 Tbsp. butter or margarine

1 jar processed cheese spread

1 can cream of mushroom soup

1 can evaporated milk

3 cups cooked rice

In a large skillet over medium heat saute the onion, celery, and broccoli in butter. Stir in cheese, soup, and milk until smooth. Place rice in a greased 8-inch square baking dish. Pour cheese mixture over rice; do not stir. Bake at 325° for 25-30 minutes or until hot and bubbly.