I try to plan out 1 or 2 good meals for the week. Cook a big flank steak or some burgers in the beginning of the week, and if you know any late arrivals, have them bring another nights worth of meat or what ever perishable foods you're into. But most meals I try to have no cooking or cleaning time, even better if I can just grab a bag of dried fruit and a bag of nuts and run back out to party! I don't want to spend too much time in my camp, I just want to get out there and play! But some people take their food more seriously then me I guess...
Fast and no clean up food ideas:
Cheese & crackers, dry salami, hard boiled eggs, muffins, packaged danishes and bear-claws, dried fruit, nuts, beef jerky, canned soup, instant oatmeal, pretzels, chips and salsa, different kinds of bars (i.e. granola, breakfast, chewy), you get the idea... But don't bring more trash then you need to, put your instant oatmeal and granola bars in a bag and throw away the box at home
And a good food tip I read before my first year, If you make rice one night and have left over, cover it up and save it for the morning, put honey or syrup on it and it's a great light and simple breakfast. Plus you don't have to haul it back in a trash bag a week later!
Experience art naked!