Looking for vegetarian/vegan meals while camping!

See if you can find 'Simple Foods For The Pack: More Than 200 All-Natural, Trail-Tested Recipes"
by Claudia Axcell and Diana Cooke and Vikki Kath and Bob Kinmont. I think everything in there meets your needs. Many of the recipes entail making up a dry mix, then finishing at the site with basics and fresh ingredients. It's good for inspiration!

I've been infatuated with pumpkin seed dip ever since returning from the Yucatan. It's quite high in protein and iron, both of which you need while hiking, and can be eaten with veggies, pita, chips, or crackers. You'd have to make it at home, of course, but it would keep fine in a cooler for several days. http://www.rickbayless.com/recipe/yucatecan-pumpkinseed-dip/
If you bring little tupperware containers, you could take it with crackers on hikes.
Also these vegan granola bars would be great for breakfast or on a hike https://food52.com/recipes/22107-five-minute-no-bake-vegan-granola-bars

Mushrooms and onions with any other veg in a foil pack. Filling and yummy and very simple

Based on your cooking equipment, it sounds like you'll be car camping -- so bringing heavy foods won't be a problem?
Either way, I bet socca would be really great made in a skillet over a fire or grill. There's a good recipe here (http://www.davidlebovitz.com/2009/06/socca-enfin/), but instead of broiling as in the recipe, do the whole thing over a hot flame, flipping the socca to cook both sides (this is how I do it, often on an electric skillet on my porch in the summer). Great with a salad, if you'll have a cooler, or some sturdier vegetable if not.
Tacos are pretty easy to do while camping, as are simple pasta dishes.
When I'm backpacking, I'm very very fond of ramen for dinner (the packaged but not instant kind). You can spiff it up with tofu (dried or not), mushrooms (same), green onions, etc.
For lunch, I like to bring the very dense Northern European style of sliced rye/multigrain bread (such as Mestermacher makes). It doesn't stale very fast, is sturdy and flavorful, and tastes good with lots of toppings such as avocado, fresh goat cheese, and baba ghanouj. I also like tamari almonds as a snack/lunch supplement for hiking.

It might be good to bring some couscous with you, mixed with bouillon or salt and some dried veggies - simply pouring on boiling water would cook this quickly. Add chickpeas or other beans and there you go. Also take some oats with you for breakfast along with dry milk for the non-vegan. Isn't there a kind of tofu packed in a carton that doesn't need refrigeration? That would be a good protein. Or bring some regular tofu in a marinade and grill it on the griddle.

Quinoa packs light and it's full of protein. Depending on where you are going you can forage for greens: river banks are good but pack some sort of field guide. You don't want to be eating poison oak.