I usually just get plain rolled oats (i don't cook them) put them in a bowl and add milk like any other cereal. Let it soak alittle and its pretty good.
Another thing I usually do is just make my protein shake w/skim milk add a few raw eggs and shake it up real good. Use that instead of just milk on my oatmeal. That way I get my whey protein, egg protein, some fat from egg yokes, and carbs from oatmeal. Add raisins or some kinda of fruit too. Doesn't get much faster then that and its very healthy. Might not sound so good, but its better then you think (you can't even taste the eggs either- I usually add 4)