- 5 pounds ground beef
- 2 cups chopped onion
- 3 cups water
- 2 tablespoons ketchup
- 2 tablespoons chili powder
- 2 tablespoons salt
- 1 tablespoon pepper
- 1 teaspoon ground mustard
- 1 cup quick-cooking oats
- 24 hamburger buns, split
- In a several large saucepans or Dutch ovens, brown beef and onion over medium heat; drain. Add water, ketchup, chili powder, salt, pepper and mustard; bring to a boil. Stir in oats. Reduce heat; cover and simmer for 30 minutes. Serve on buns.