Prepare the Beef Mixture
In a large bowl, combine ground beef, breadcrumbs, egg, onion, salt, pepper, and garlic powder. Mix gently until just combined.
Form the Hamburger Steaks
Shape the mixture into evenly sized oval or round patties.
Assemble the Bake
Arrange the hamburger steaks in a greased baking dish in a single layer.
Make the Gravy
In a bowl, whisk together beef broth, cream soup, and Worcestershire sauce. Pour evenly over the patties.
Bake
Cover with foil and bake at 375°F (190°C) for 40–45 minutes, until the steaks are cooked through and the gravy is bubbling.
Serve
Let rest for 5 minutes before serving.