Mix ground beef, bread crumbs, egg, Worcestershire sauce, salt, onion powder, garlic powder, and pepper together in a large bowl until combined. Form into 8 balls and flatten into patties.
Heat oil in a large skillet over medium heat. Add patties and onion; fry until patties are nicely browned, about 4 minutes per side. Transfer beef patties to a plate, and keep warm.
Sprinkle flour over onions and drippings in the skillet. Stir in flour with a fork, scraping bits of beef off of the bottom of the skillet as you stir. Gradually mix in beef broth and sherry. Season with seasoned salt. Simmer and stir over medium-low heat until gravy thickens, about 5 minutes.
Reduce heat to low, return patties to the gravy, cover, and simmer until cooked through, about 15 minutes.
Nutritional Facts
Per 4 servings
Calories: 319
Carbohydrate: 14g
Fat: 19g
Fiber: 1g
Protein: 23g
Sugar: 3g
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