Oatmeal is healthy, cheap, quick, and add a bit of honey or brown sugar makes it super tasty. Steel cut oats take longer to cook than quick oats, but they're more satisfying IMO.
Hack for making steel-cut oats quicker: soak the portion you plan to cook overnight. Cuts cooking time down to about 15 minutes. Tastes exactly the same (IMO). If you like to add cinnamon, or dried apricots, raisins, or dates or whatever, do that before actually cooking.
