1.Preheat The Grill For High Heat. 2.In A Saucepan, Mix The Worcestershire Sauce, Brown Sugar, Garlic Powder, Seasoned Salt, Celery Seed, Italian Seasoning, And Basil. Stirring Constantly, Bring To A Boil And Cook 1 Minute. 3.In A Large Bowl, Mix The Sauce, Ground Beef, And Onion. Form Into Burgers. 4.Lightly Oil The Grill Grate. Place Burgers On The Grill, And Cook 5 Minutes Per Side, Or Until Well Done. Season With Salt And Pepper.