In a mixing bowl, combine the ground beef, breadcrumbs, onion, egg, Worcestershire sauce, salt, and pepper. Mix gently but thoroughly until all ingredients are well incorporated.

Shape the mixture into oval patties, about 1/2-inch thick.

Heat the olive oil in a large skillet over medium-high heat. Once hot, add the patties to the pan, searing them for about 4-5 minutes on each side until they develop a lovely brown crust.

Remove the patties from the skillet and set them aside.

In the same skillet, pour in the beef broth, scraping up the brown bits stuck to the bottom. Stir in the horseradish, heavy cream, and parmesan cheese, letting it simmer for a few minutes until the sauce thickens slightly.

Return the beef patties to the skillet, spooning the creamy sauce over them. Let them simmer in the sauce for another 5-7 minutes.