In a huge bowl, combine as one the ground meat, egg, bread pieces, pepper, salt, onion powder, garlic, and Worcestershire sauce. Structure into thick patties. Heat the oil in a huge skillet over medium intensity. Broil the patties and onion in the oil until patties are well seared. Eliminate the meat patties to a plate, and keep warm. Sprinkle flour over the onions and drippings in the skillet. Mix in flour with a fork, scratching pieces of meat off of the base as you mix. Progressively blend in the meat stock. Season with prepared salt. Stew and mix over medium-low intensity for around 5 minutes, until the sauce thickens. Go intensity to low, return patties to the sauce, cover, and stew for an additional 15 minutes.
Enjoy !