Place a large sauce pot on medium heat. Let pot heat up for 2 minutes before crumbling ground beef into pot.
Sauté ground beef for 2 minutes. Add onions, ground mustard, garlic powder, salt and pepper.
Once beef is ¾ browned stir in ketchup. Saute for 3 minutes, then add dry pasta. Mix together while adding in the beef stock.
Cover sauce pot and cook for 20 minutes.
Remove lid and lower heat to medium low. Add grated cheese and stir until melted. Serve and enjoy!