Cheddar Broccoli Soup

(This is a large recipe. I would split in half even for a large family.)

1 pkg. frozen broccoli
6 carrots, sliced
4 stalks celery, sliced
1 medium onion, chopped
3 cubes butter or margarine
1 ½ cups flour
10 cups water
10-12 chicken bullion cubes (to taste)
1 16 oz. container Cheez Whiz or Velveeta cheese

*Steam vegetables until almost tender. In separate bowl, microwave butter or margarine until melted. Stir in flour and mix until smooth. In large saucepan, dissolve bullion cubes in boiling water. Add a cup of bullion water to the butter and flour and whisk together. Then add to boiling water and stir. Add drained vegetables to soup. Add cheese. Stir until melted. Cool, then put in freezer bags. Lay flat in freezer. Reheat in pan when ready to eat.