Update: This morning was the first bowl of oatmeal of the season, so I took the opportunity to add a brand new photo (and more appetizing, I hope).
Step 1: Ingredients
nonfat dry milk powder (vegans and the lactose-intolerant can skip this)
one Splenda packet (or 2-3 teaspoons of sugar)
Additionally, for apple-cinnamon oatmeal:
dried apple bits