Preheat broiler to low

Chop onion

In mixing bowl, whisk together egg, salt, pepper, and Worcestershire sauce

Place ground beef and bread crumbs into the mixture

With hands or a fork, mix until well blended

Form into 4 patties approximately 3/4 inch thick

Place patties on the broiling pan

Broil 6 to 8 minutes per side under preheated broiler, or to desired doneness

Serve