I've always taken oatmeal camping, canoeing, just about any overnight or longer outdoor activity. As stated earlier, it's good hot or cold, can add just about anything to it, and for sweetness if needed I add honey, mostly for taste since the calorie diff between sugar and honey isn't all that great. Plus i use the honey to sweeten my tea, and it never goes bad. I've had oatmeal I've unpacked a couple years later and it's no different than the stuff I got ate last week.
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seeking to balance risk and reward
Audaces fortuna iuvat...fortune favors the bold
Practice methodical caution...Les Stroud