If you want a healthier substitute to regular hamburgers, you should check out veggie or soy burgers. These burgers are a lot better than they used to be in years past. You can find them in a bunch of different flavors such as black bean, or Asian. They are a lot like your traditional hamburger these days. Typically they have a lot less total fat and saturated fat than beef burgers. They also have fiber, which beef burgers do not. Soy burgers are a good sore of protein, fiber, and omega-3 fatty acids. Some research is also showing that soy protein can help lower your cholesterol.
So, if you are looking for a healthier alternative to regular beef burgers, check out soy or veggie burgers, as I think you will be pleasantly surprised.