• 1 T vegetable oil
• 1 small onion
• 2 carrots
• 2 stalks celery
• 1 lb ground hamburger
• 1 small can tomato soup (10.75 oz)
• 1/4 c ketchup
• 2 T mustard
• 2 T brown sugar
• 1 T Worcestershire sauce

In a food processor or blender, finely chop the onion, carrots, and celery. Add the mixture and the vegetable oil to a large pan on medium heat. Cook until vegetables begin to soften, about 3-5 minutes. Add the hamburger and cook until hamburger is thoroughly browned. Add the tomato soup, ketchup, mustard, brown sugar, and Worcestershire sauce. Stir until well-mixed and thoroughly warmed. Serve on hamburger buns and enjoy!