Step 1

In a large soup pot melt 1 tablespoon of butter over medium high heat. Add ground beef, pepper, onion, carrots and celery. Cook until ground beef is browned, about 10 minutes.

Step 2

Add broth, potatoes and parsley into pot. Bring broth to a boil, and then reduce to a simmer and cook 12 minutes, or until potatoes are soft and fork tender.

Step 3

In a small saucepan melt remaining 3 tablespoons of butter over medium heat. Whisk in flour and mix until combined. Add milk and cheese, and continue to stir until cheese is completely melted.

Step 4

Add cheese mixture and sour cream into soup pot. Stir soup and cook for 5 more minutes. Serve in bowls and top with any favorite burger toppings.