I camp a lot so I think about this a lot. We had a thread that was stickied a while ago (I think it is titled something like "Planning to Go Off Plan") that mentioned many things good if you have a cooler, which would work for car-camping.
For backpacking, yes, much more of a challenge. Here's what is on my list:
- Plain quick-cooking oats (sometimes you can find plain instant but it is harder, though I think even Target brand might have one)
- coffee (I use instant when I backpack)/tea
- *small* container of lowfat milk or plain soymilk, in an aseptic container. I would even bring little restaurant containers of half and half for coffee or oatmeal
- Non-sugar sweetener as desired
- Nuts
- Apples travel well
- Dried hummus mix and refried bean mix (found this in a natural foods store)
- WW pita bread packs well. Maybe also those sandwich thins that are out there now, but I stick with pita which is 100% whole wheat.
- Ryvita cracker are SBD-approved (at least the ones I have); Plain Triscuits
- Natural peanut butter, packed as you need (well-packed I might add; it is very oily when it leaks)
- Single-servings of olives (I bought a bunch of tiny cans when I saw them)
- Cans or pouches of tuna/salmon
- Packets of mustard/mayo/etc
- Pre-cooked aseptic brown rice
- WW pasta - whatever is the fastest cooking size
- Some of the natural Mac & Cheeses seem to be SBD-safe (I am thinking of Annie's) - the "sauce" part at least since the whole wheat pasta version is harder to find. I often bring a pouch of the dried sauce, which really doesn't need any additional ingredients except some moisture, combine it with ww pasta or brown rice, and add tuna and some veggies if I have any. Delicious camp fare!
- Laughing Cow cheese travels pretty well, too especially still in its box. That could work for a creamy sauce for pasta/rice, too.
- Baby bel cheese will keep for more than a day at room temp if you are not going to be in a super-hot climate.
- Same for a bar of dark chocolate
- Same for carrots if you can keep them cool, also a bell pepper if you don't cut it before you leave
- If you are not going too crazy far on your hike, you could bring 6 eggs in a plastic camping carrier. They would have to be kept cool, but are OK for a day at room-ish temperature. This is probably not worth it, though, for the weight and mess/clean-up.
If you have the room and can spare the weight, you could also bring one small, lunchbox sized soft cooler with one soft freezer pack to keep a couple of things at least cool.
I eat really simply when I camp. Some people might have more interesting ideas. My backpacking menus are very veggie-light. I will look forward to ideas to boost veggies. Maybe there is something in the realm of freeze-dried food?
I think the dry goods sections of a natural foods store would be a great place to find stuff that would pack well and cook quickly and still be pretty much on plan.