These are really good, I'm not a vegetarian but i would prefer these to a meat version anyday! Ok so you just have to chop up some onions, potatoes, carrots and pumpkin cook them in oil and add some curry powder (the amount varies depending on how much you like!). Once the vegetables are mushed up add some peas. Add breadcrumbs and one egg and mix really well or the egg will cook in the mixture. Let the mixture cool and then just roll into burger shapes and cook them on the barbeque or in a fry pan. Serve in rolls with salad (they are really nice with some sour cream as well!)
I don't think there's a standard veggie burger.... they're just burgers... with veggies in them. I fucking hate hate HATE boca burgers... but that actully sounds really good OP, I might have to try it.
I don't think there needs to be pumpkin in the recipe, you could substitute and put some chick peas in instead. You could put whatever vegetables you want in like maybe sweet potatoes.