1.Preheat An Outdoor Grill For Medium-High Heat, And Lightly Oil The Grate. 2.Combine Ground Beef, Ground Pork, Onion Soup Mix, Barbeque Sauce, Chopped Onion, And Garlic Salt In A Large Bowl. Lightly Form Mixture Into 9 Patties. 3.Cook On Preheated Grill Until The Burgers Are Cooked To Your Desired Degree Of Doneness, About 5 Minutes Per Side For Well Done. An Instant-Read Thermometer Inserted Into The Center Should Read 160 Degrees F (70 Degrees C).