Place Onion And Oil In A Small Skillet; Cover And Cook For 3-4 Minutes Or Until Very Soft, Stirring Occasionally. Cool. In A Large Bowl, Combine The Bread Crumbs, Soy Sauce, Worcestershire Sauce, Garlic Powder, Poultry Seasoning, Mustard, Pepper, Salt And Onion. Crumble Turkey Over Mixture And Mix Just Until Combined. Shape Into Two Patties. Wrap In Plastic Wrap And Refrigerate For At Least 20 Minutes. In A Nonstick Skillet Coated With Nonstick Cooking Spray, Cook Patties Over Medium Heat For 4-5 Minutes On Each Side Or Until A Meat Thermometer Reads 165 Degrees F. Serve On Buns With Lettuce And Tomato.