Ages ago while living on the east coast in MD, I saw a cookbook for use while living on a boat, probably about the same as one for camping. Many people lived on sailboats.
I grew up on cornbread and beans, and know that cornbread can stretch to several days, and that a pot of beans & ham or saltpork can cook without much tending and is filling. Most one-pot meals require multiple ingredients, so I would cook them, freeze and use up as thawed.
I once went on a DNR sponsored hiking, camping trip where scrambled eggs were carried in a jar, and pancakes were mixed in a zip-loc bag, as was a dessert. No dirty hands because the bags were kneaded from the outside.
Check the local library for books from Outdoor life or Boy Scout camping.