This is actually one of my favorite foods while either going on a day trip or doing an overnighter.
3/4 cup whole wheat cous cous
1 packet Spam Single
1 one quart Ziploc freezer bag
Seasoning, to taste
1 cup water
At home, put 3/4 cups of cous cous into the Ziploc bag. Add seasoning to fit your taste (I generally use seasoned salt, but anything would work). That's it.
In camp, cut up the Spam and drop it into the bag. Boil one cup of water (check out my SuperCat Breakfast for my preferred method of boiling water) and add it to the bag as well. Seal the bag and let sit for five minutes. Open, and eat directly from the bag. When you're done, drop the Spam package into the Ziploc, wash off your spoon or fork, and you're done!
Before you say "Eww! Gross!" about the Spam, let me say that it's not as bad as you think. The Hawaiians eat it all the time. It doesn't need refrigeration, and contains 13 grams protein. Add that to the carbs you get in the cous cous, and you've got a pretty healthy meal.
Spam is high in fat, sodium, and calories, but when backpacking, none of these are necessarily bad things. You're expending so much energy and sweating out enough salt that a little bit in return isn't going to hurt you.
This recipe is enough to be plenty for one person, and can be prepared cold if you forget your lighter (trust me on that one). It feels great to hold the steaming bag on a cold morning/evening. Just be sure to take the saltiness of the Spam into consideration when flavoring the cous cous. And be sure to have plenty of water as well.