Or you can also pre make your food - I got a zip lock bag of waffles ready to go. pull them out add butter and jelly and eat....
Another thing that I like to do is get cans of DintyMore Stew and heat that up over a single propane burner right in the can. they way you don't have to deal with pots and pans. But you have to remember the can opener or make sure all your cans have pop tops!
There are also MRE's that you can get for decent prices at military surplus store.
I also like to heat up bagels over the same single propane burner and butter them.
As for sandwitches - just bring a load of bread and your filling of choice and make them on the trail - no soggy bread that way.
Another thing that is great is to get those little apple or berry pies and heat them up over the same single propane burner using a weenie roaster stick for hot apple pie on the trail! Yummm