I love this soup but it calls for Velveeta. Is there anything you can suggest to replace it?

Cheeseburger Soup
1 lb. ground beef 4 c. diced potatoes
¾ c. chopped onion ¼ c. flour
¾ c. shredded carrot 2 c. cubed Velveeta
¾ c. diced celery 1 ½ c milk
1 tsp. dried basil ¾ tsp. salt
1 tsp. Dried parsley flakes ½ tsp. pepper
4 T butter, divided ¼ c. sour cream
3 c. chicken broth

Cut up all vegetables first. This will make process easier. Brown beef in large saucepan, drain and set aside. In same pan melt 1 tablespoon of butter add parsley and basil. Sauté
onion, carrots, celery 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. In small skillet, melt remaining butter. Add flour and cook for 3-5 minutes, stirring
constantly. Add to soup, bring to boil. Cook and stir for 2 minutes, (longer if making more than 1 batch at a time), reduce heat to low. Add cheese, milk, salt and pepper; cook and stir until cheese is melted. Remove from heat; blend in sour cream. Makes 2 ½ quarts, serves 8.