Cheeseburger Soup

Ingredients

• 1/2 pound ground beef
• 3/4 cup chopped onions
• 3/4 cup shredded carrots
• 3/4 cup diced celery
• 4 cups peeled and diced potatoes
• 1 teaspoon dried basil
• 1 teaspoon dried parsley flakes
• 4 tablespoons butter, divided
• 3 cups chicken broth
• 1/4 cup flour
• 8 ounces Velveeta cheese
• 1 1/2 cups milk
• 3/4 teaspoon salt
• 1/4 teaspoon black pepper
• 1/4 cup sour cream