Cheeseburger Soup

1. In a large pot or dutch oven over medium-high heat, cook ground beef and onions until almost browned, about 5 minutes. Drain fat if needed.
2. Add carrots and celery and cook until slightly softened, about 5 minutes.
3. Add garlic, salt, parsley, mustard and pepper and cook 1 minute.
4. Add broth and potatoes.
5. Bring to a simmer over medium-high heat, then reduce heat to medium- low, cover and simmer for 15-20 minutes until potatoes and carrots are tender.
6. Whisk together cream and corn starch and add to soup along with cheese, cooking and stirring on low until thickened. Serve.