My family still enjoys burgers, the old-fashioned kind cooked on a grill.  We don't have them often and when we do, I have extras cooked to use for a second quick meal later during the week.  I have lots of choices for veggie burgers that can be cooked right on the grill with the others. 

My favorite brand that is the most "burger-like" is Boca-Burgers™, found in the freezer section of many grocery stores.  There are also many brands of veggie burgers made from soy, beans, or vegetables.   Experiment to find one that you like to eat.

Another product I use occasionally is called Tofu Burger by Fantastic Foods.  They sell a mix of spices, dehydrated vegetables, and grains that the directions say to mix with 12 ounces of firm or extra-firm tofu and then form into patties and brown in a non-stick skillet.  I modified the recipe by also adding 2 Tbsp. of ground flax seeds (flaxmeal), and 2 Tbsp. of chopped fresh herbs from my herb garden (chives, parsley, rosemary, summer savory, chervil, etc., etc.).  The recipe makes 6 small patties, enough for 3 meals for me during the week either for lunch or supper. Two of these patties would contain 4 ounces of tofu, which is one serving of soy foods.