Broccoli Cheese Soup

As the cold weather quickly comes upon us, nothing taste better than a warm bowl of homemade soup. This one is my favorite and everyone says you'll come back for seconds after you try this. It's one of my specialty's and makes a lot. Enjoy~

4 C. cubed potatoes
1 1/2 C. carrots
1 c. celery
1 c. chopped onion
4 cups water
6 cubes ckn boulion
10 oz. chopped frozen broccoli
Cook the above first.
Then make white sauce in separate pan:
1/2 C. margerine
1/4 C. flour
2 C. milk
3/4 lb. velveeta cheese
Add the two together and stir on med. low until serving.