I make a lot of vegetarian meals when I'm at home, and when I have a good amount of leftovers, into the dehydrator they go. The only change is, if I know I'll be dehydtrating, I chop the veggies a bit smaller. So, what's favorite? Probably black beans over rice. The basic recipe is on the back of the Goya can. I think Goya calls for too much water, so I usually end up stirring in some tomato paste to thicken the sauce, and I use a whole green pepper instead of whatever quantity is called for in the recipe. Sometimes add mushrooms and red peppers, too. When dehydrating, I fix a large bowl of beans over rice, stir it all up, and then dump it on the dehydrator sheet (covered with lightly oiled foil).
Talking to some other campers last week, I commented on tofu. When I've dehydrated dishes with tofu, the tofu never seems to fully rehydrate. I thought about separately cooking tofu and bagging it separately so that I could start soaking it in water a long time before I wanted to eat it in the dish. One of the assembled campers recommended shredding it with a cheese grater vice cubing it per my normal practice. When sliced that finely, it should be no trouble to de- or rehydrate. Beans already have plenty of protein, so probably don't need tofu, but some of my other dishes are definitely getting shredded tofu added.