What ground-beef steak dish is considered a precursor to the hamburger?

The ground-beef steak dish considered a precursor to the hamburger is Hamburg steak.

Hamburg steak was a patty of ground beef associated with German culinary traditions and made especially prominent by German immigrants and American restaurants. It could be seasoned, shaped, and cooked in different ways, and early versions were sometimes served with onions, breadcrumbs, or even an egg rather than inside a bun.

The dish appeared on American restaurant menus by the 19th century. A Delmonico’s menu from 1873 is commonly cited as an early English-language reference, offering Hamburg steak as a relatively expensive plate. As grinding meat became easier and cheaper, the dish became more widely available.

The hamburger emerged when versions of Hamburg steak were placed between bread and sold as a portable sandwich in the late 19th and early 20th centuries. Salisbury steak is related but is a later named variation, usually served with gravy. It is therefore a tempting wrong answer, but Hamburg steak is the direct precursor named in the question.