My girlfriend is a vegetarian and so are most of my friends (I don't think I will ever fully understand why), but they love this new BK Veggie Burger. I tried it but wasn't a big fan.
I know at the grocery store there are veggie burgers...I think the company is called "Morningstar Farms" or something like that. All I remember is the box is Red...sorry for not being much help with the name. But anyways....That stuff is really good. I like it a lot.
There are also BOCA burgers and those are supposed to be really good, but I've never tried one and if I had the choice...I would order the real deal.
If you google a recipe for veggie burgers, a bunch of sites will come up....give it a go.
edit: found a website for ya
http://www.kelloggs.com/brand/msfarms/home.html
I think their products are what my girlfriend stocks my freezer with, but I can only tell if I see the sides of the box (cause how they are stacked in the freezer). Explore that site for a bit and you can find out where to get some if you want.
edit #2: here is another website...I'm pretty sure these are the burgers I am talking about
http://www.bocaburger.com/main.aspx?s=&m=index