Cheeseburger Soup

1/2 lb ground beef
3/4 cup chopped onion
3/4 cup shredded carrots
3/4 cup diced celery
1 tsp dried basil (optional)
1 tsp parsley flakes
4 tbsp butter, divided
3 cups chicken broth
4 cups diced, peeled potatoes
1/4 cup flour
8 oz. (2 cups) processed American cheese, cubed

Brown and set aside beef. Saute onion, carrots, celery, basil, and parsley in 1 tbsp. butter till tender. Add broth, potatoes, and beef; bring to boil. Reduce heat, simmer til potatoes are tender (10-12 minutes). Thicken soup with flour-butter mixture. Bring to a boil, cook and stir for 2 minutes, reduce heat to low, and add cheese, milk, salt, and pepper. Stir until cheese melts.