Here in Brazil the standard fare is rice and beans. Brazilians eat it twice a day.

I usually carry a few sacks of Kraft Minute Rice if I'm going out for the weekend. They also sell a freeze dried bean mix that cooks in 2 minutes. I usually boil the rice (5 Minutes) in extra water and use that water to mix up the beans. Start to finish you can feed four people in less than ten minutes cooking time. Actually once you boil the rice you can stop cooking. The hot water is enough to mix up the beans.

If you want to go really light you can just boil the rice and add a bullion cube for chicken and rice. Add to it any wild birds you happened to kill and you eat pretty good. Mac