Instead of Veggie burgers or the Hamburger Melts I thought; why not use a large Portobella Mushroom. The are so good and task a little like steak. My sweetie and I love these mushrooms and have them often in many recips. This one is so good. I don't remember where this recipe came from, but I do know that it's great and healthier than burgers if you need to watch your saturated fats in your diet. I think you'll like this meatless burger.