This thread came to my mind first. There are also a number of other threads on veggie food in this section I think.
Breakfasts... well I always have porridge. (OK, sometimes cold uncooked porridge (ie musli) if I'm feeling lazy and don't want to get out of my nice cosy sleeping bag...) Oats, dried milk, sugar, and water. (Or Oats, salt, and water if you're feeling Scottish. Personally I prefer being a sweet-toothed English blasphemer.) In late summer and autumn adding things like blackberries or plums or anything else nice is really good too, or you can take some dried fruit with you.
Lunch. Well there are recipes for bannock by the dozen around here. If you don't want to try bannock then perhaps you could take along sandwiches or something, or do the soup/noodle thing.
Dinners. There's loads of things you can make veggie. Easiest are stews - bung in some veg you like, some carbohydrate you like (that's potatos or rice or pasta or noodles or cous-cous etc etc), and some protein of your choice, which can be just about any veggie protein that isn't milk or cheese. That means any combination from various beans, lentils, TVP, soya stuff, quorn stuff, chopped up veggie sausages or burgers, seeds and nuts. I'm sure there's more I've forgotten. Peanuts actually stew really well, and cashew nuts are lovely. All other nuts I've tried stewed have been pretty good except brazils, which need a vigourous bashing first and don't normally quite taste right in the stew. The exception to that is if you've flavoured the stew with soy sauce, then they do seem to be good. (Well, to me at least...)
You can fry veggie sausages and burgers, so if that's what you normally eat, then it might be an idea to start with that for your first few times to get an idea of the speed of cooking over fire because you already know what it should look and smell like when done.
My dinner on Saturday (admittedly cooked on a gas stove *sigh*) consisted of nettles, dandelian leaves, dandelion flowers, beech leaves, gorse flowers, sunflower seeds, spaghetti, pre-chopped broccoli and carrot, half a stock cube and some black pepper. Nothing special, but it was still good.
If you have a favourite soup, then boil up your greens and carbohydrates, (drain them) and add the soup and warm it through. Draining water but keeping cooked leaves in the pot can be tricky, and is only necessary if you're using tinned soup. Depending on your protein choice you'll either boil the protein with the greens or just warm it with the soup...
