Melt 4 tbsp. butter over medium heat and saute potatoes, onion, carrots, celery and seasoning for 10 minutes.
Add in 3 cups of chicken broth, bring to a boil over medium high heat, cover, reduce heat to medium low, and simmer for 15 minutes.
Brown deer burger in another pan and add to veggies after they simmer for 15 minutes.
Make the roux. Melt 3 tbsp. butter over medium heat, add in flour, and mix until bubbly.
Slowly stir in 2 cups of milk and stir until thickened. Add to the veggie and meat pan.
Add in 16 oz. Velveeta cheese and stir until melted.
Add salt and pepper to taste.