1.Brown Ground Beef In A Large Skillet Over High Heat. Drain Fat. Stir In Garlic, Onion, And Cabbage; Cook Until Vegetables Are Wilted And Soft. Stir In The Beef Broth, Worcestershire Sauce, And Mustard. Cook Over Medium Heat, Uncovered, Until Reduced To A Sloppy Joe Consistency. Season With Salt And Pepper. 2.Place Hamburger Buns On Top Of Meat Mixture; Cover Skillet To Steam, About 1 Minute. To Serve, Fill Steamed Buns With Beef And Cabbage Mixture.