It depends what you intend to do, if you are hiking all day, you will need high carbohydrate foods to replace the energy used during the day (potatos, chocolate etc), if fishing all day then a less carbs (and hopefully a fish).
The art of camp cooking is to minimise the amount of fuel you use. If you have access to a fire, you can cook food for a king, however, if you have just a trangia, you will want to cook the food quickly to preserve your fuel. Have a look here:
http://www.lovetheoutdoors.com/camping/Recipes.htm for some recipie ideas, I would go with the simplest ones if I were you.
Bare in mind it also depends on who you are with, (if everyone else has these evil ready to eat self cooking meals, you will feel left out if you are cooking).
Personally, I use tinned meat as there is nowhere in the UK where I can hunt now for lack of permission, and carry fresh veg and fruit, as time has gone by, I have started to add wild foods to suppliment my diet. If you are like me and do not like powdered milk (the powdered milk that comes in an old fashioned milk bottle looking bottle tastes the less disagreeable to me), you can keep skimmed milk for a few days.
If you have a base camp (and are NOT in bear country), you can even make a fridge by putting the stuff you want kept cool in layers of muslin cloth, hanging it from a branch and wetting the cloth.
Do not take beans etc that require long cooking times, or 12/24 hour soaking. You will get dirt in it before you get to cook it. (and will keep your pot occupied for 12 hrs!).
