In a medium bowl, combine ground beef, onion, bread crumbs, egg, parsley, horseradish and salt; mix well. Shape into 4 oval patties about 1/2 inch thick. Heat a large skillet over medium-high heat until hot. Add beef patties and cook 6 to 7 minutes on each side, or until no longer pink inside. Transfer to a platter and cover with aluminum foil to keep warm. Drain off all but 1 tablespoon of the liquid from the skillet. In the same skillet, saute mushrooms over medium heat 3 to 4 minutes, or until tender. Add gravy and heat 3 to 4 minutes, or until heated through. Pour the gravy mixture over the beef patties and serve. Makes 4 servings Typed in MMFormat by cjhartlin.msn@attcanada.net Source: Mr. Food Easy Cooking May/June 99 Posted to MM-Recipes Digest V4 #11 by cjhartlin@email.msn.com on Apr 5, 1999