For a gas grill, preheat grill. Reduce heat to medium. Place patties on the grill rack; cover and grill as above.
Serve patties on Texas toast or buns topped with lettuce, tomato slices, and onion slices. Pass additional Tangy-Sweet Barbecue Sauce. Makes 4 servings.
Tangy-Sweet Barbecue Sauce
Combine ketchup, brown sugar, granulated sugar, cooking oil, vinegar, honey, and Worcestershire sauce in a medium saucepan. Stir over medium heat till the sugars dissolve and sauce is hot. Cover and refrigerate up to 1 week. Makes 1-3/4 cups.