Something New for Dinner

I finally made this recipe. It seems to be a favorite among big families and teenagers. We loved it.
Cheeseburger Soup

½ lb. Lean ground beef
4 C. diced potatoes
¾ C. chopped onion
¼ C. flour
¾ C. shredded carrots
8 ox. American cheese, cubed (2 C.)
¾ C. diced celery
1 ½ C. milk
1 tsp. Basil
¾ tsp salt
1 tsp. Dried parsley flakes
¼ to ½ tsp. Pepper
4 T. margarine, divided
¼ C. sour cream
3 C. chicken broth
In a 3-quart saucepan brown beef; drain and set aside. In same saucepan, sauté onion, carrots, celery basil and parsley in 1-tablespoon margarine until vegetables are tender, about 10 minutes. Add broth, potatoes and beef; bring to a boil. Reduce heat; cover and simmer 10 to 12 minutes or until potatoes are tender. Meanwhile, in a small skillet, melt remaining margarine. Add flour; cook and stir 3 to 5 minutes or until bubbly, add to soup; bring to a boil. Cook and stir 2 minutes. Reduce heat to low. Add cheese, milk, salt and pepper; cook and stir until cheese melts. Remove from heat; blend sour cream into mixture.