Something we always did as scouts was to put cut up potatoes, vegetables, and sausage into a tin foil bowl and stick it in the fire. I always remember them cooking very well and they were also very hearty. Also, very little setup/cleanup; which I am always for!
Breakfast can also be done in a foil bowl, just put scrambled eggs, sausage, green onions, cheese, and whatever else into a bowl and stick that into the fire for a nice crustless Quiche.
But I'm no chef, so I don't really have anything else per se but some general advice: if it's a food item that does not need much attention, then it will probably work in a fire.
Pro Tip: Double wrap it if you can, you don't want the foil taring and getting ash all in your food!
Other Good Recipes: Anything you can stick a stick through works as well (hot dogs, marshmallows, etc.) In a completely separate category, making peach cobbler in a dutch oven is always a good camping desert.