I always try to overdo the complex carbs the night before - pasta is the best I have found..
On the hill for daytime I usually carry hot cross buns, wee cheese portions, cereal bars, chocolate and salted cashews. I find its way better to graze throughout the day rather than stop for actual lunch. I think this may reflect my own laziness though as I do like a bit of a sit down and a relax
My favourite camp dinners are pasta, with my own homemade concentrated sauce. Egg noodles with a sachet of Tuna, and Ainsleys thai chicken cup soup, and haggis with instant mash laced with my own special seasoning.. The instant mash definately isnt good carbs though, I can feel the difference in my performance.