Instructions

  1. Brown ground chuck and onion in a large nonstick skillet, stirring until meat crumbles; drain.
  2. Stir in ketchup and next 5 ingredients.
  3. Bring to a boil; cover, reduce heat, and simmer 5 minutes, stirring occasionally.
  4. Spoon meat mixture over bottom halves of buns; top with remaining halves.