Cheeseburger Soup

This is a hearty soup that is very filling and delicious.
I serve it with Rhodes Rolls.

1/2 lb Ground Beef (browned)
3/4 cup chopped onion
3/4 cup shredded carrots
3/4 cup diced celery
1 tsp basil (reduce to 1/2 tsp if desired)
1 tsp parsley (reduce to 1/2 tsp if desired)
4 TBSP margarine
3 cups chicken broth
4 cups diced potatoes
1/4 cup flour
8 oz. Velveeta cheese
1 1/2 cups milk
1/2 tsp salt
1/4 tsp pepper
1/4 cup sour cream

In large, deep skillet, saute carrots, onions and celery in 1 TBSP marg. for 10 min.
Add broth, potatoes, basil, parsley and beef.
Bring to boil, then simmer covered for 10 min.
In small saucepan, cook and stir remaining margarine and the flour for 3 min.
Add to soup and bring to boil for 2 min. Reduce heat to low.
Add cheese, milk, salt and pepper. Stir until cheese melts.
Remove from heat and stir in sour cream.