01 -
In a 3-quart saucepan, cook ground beef over medium-high heat until browned; drain excess fat and set aside.
02 -
Using the same saucepan over medium heat, sauté chopped onion, shredded carrots, diced celery, dried basil, and dried parsley in 1 tablespoon of butter until vegetables are softened, approximately 10 minutes. Add pressed garlic and cook until fragrant, about 1 minute.
03 -
Add chicken broth, diced potatoes, and browned beef to the saucepan. Bring mixture to a boil, then reduce heat, cover, and simmer for 10 to 12 minutes until potatoes are tender.
04 -
In a small skillet, melt the remaining butter. Stir in the flour and cook for 3 to 5 minutes until bubbly. Incorporate this mixture into the simmering soup, bring to a boil, and cook while stirring for 2 minutes.
05 -
Lower heat to low. Stir in cubed pepper jack Velveeta, milk, salt, and black pepper, stirring continuously until cheese has fully melted. Remove from heat and blend in sour cream until smooth.