You all will think I'm barbaric, but here's what I usually take and make. I do a lot of miles, so it's become kind of a honed thing, but anyway, here goes.
It has gotten to the point where I mainly eat out of the fridge. Yes, I said you'd think I was barbaric, but when you drive all day, sometimes the last thing you want to do is cook when you pull in. I'll get to camp cooking in a bit, but this is road trip cuisine.
In the fridge, I always pack good OJ, organic milk, good guacamole - kind of like veggies in a tub, in my head, at least - an assortment of cheeses, some good Greek yogurt, some type of tofu or seitan stuff that keeps well, maple syrup, some lemons to flavor the water, and I always leave space for stuff I pick up along the way, such as sandwiches or take-out food. I have a mental map of good food places in many parts of the country, so that helps, especially if you're a veg-head, such as I.
I do carry a book lately that, if anything were to get me to eat meat again, this would be the thing, but I have not yet tried it out.
http://www.amazon.com/500-Things-Eat-Be ... 301&sr=8-1
Outside the fridge, I will carry crackers, cookies, bread, granola, pistachios, and a tub of Ultimate Meal powder. Yes, I am a barbarian. I *do* like to eat good food at home, and I like to cook, but when I'm on the road, I'm a fairly gross, utilitarian guy.
There is other stuff, as well, but I'll leave it at that for the moment and I will share at least one recipe so that I can say I posted a relevant thing to this thread.
When I do take the time to cook - and I carry a two-burner Coleman in the van for those occasions - one of my favorite things is as follows, and it's very easy and delicious.
1 package of good polenta
Some butter or olive oil - either one will work
Some good cheese that will melt - Taleggio is nice, but cheddar works, as well, or swiss or many others.
Some cherry or grape tomatos.
Heat up a frying pan and either the butter or the oil.
Have the polenta sliced into half inch by two inch rounds and put them in the pan to heat up, even lightly brown on one side. Flip them, put some cheese on each one, then cover the pan, if possible, and let the cheese melt. Just before serving, put half a mini tomato on each one and devour. It's very tasty.
Okay, that's my bogus post, but it's all true, I swear. I'll try to remember my tofu scramble recipe in a coherent way so that I can post that another day.