Cheeseburger Soup

Ingredients

• 1 pound ground beef
• 3/4 cup onion (chopped)
• 3/4 cup carrots (shredded)
• 3/4 cup celery (diced)
• 1 teaspoon dried basil
• 1 teaspoon dried parsley flakes
• 2 cloves garlic
• 4 tablespoons butter (divided)
• 3 cups chicken broth
• 4 cups peeled potatoes (diced, about 1¾ pounds)
• 1/4 cup all-purpose flour (gluten-free is fine)
• 12 ounces pepper jack Velveeta (cubed)
• 1½ cups milk
• 3/4 teaspoon salt
• 1/4 teaspoon black pepper
• 1/4 cup sour cream