Better Homes and Gardens
Here's a fun and tasty soup recipe the whole family can enjoy. For the full cheeseburger effect, serve on toasted buns with all the fixings.
In a large pot, cook the beef, onion, celery, and garlic over medium heat until the meat is browned and the vegetables are tender; drain the fat. Sprinkle flour on the beef mixture. Cook and stir for 2 minutes. Stir in the broth and potatoes. Bring to a boil, stirring occasionally. Reduce the heat to a simmer and cook, covered, until the potatoes are tender, for 10 minutes.
Stir in the tomatoes, cheese, tomato paste, ketchup, and mustard. Cook and stir until the soup comes to a gentle boil. Stir in the milk and heat through.
Preheat the broiler.
Place the split buns, split sides up, on a broiler pan. Brush with the melted butter or olive oil. Broil 4-5 inches from the heat until golden, for about 1 minute. Serve the soup with toasted buns and top with condiments.