Pure plain. Cook it up old-fashioned style on the stove or use Quick Oats to save a bit o' time. If using quick oats, set up the night before: measure 1/2 c. quick oats into a microwave-safe bowl and leave it on the counter along with your 1/2 c. measure. In the morning just add 1 c. water , stir, and zap in microwave for about 3 minutes. Stir again, sprinkle with cinnamon sugar if you like and add a splash of milk. Easy!
Enjoy oatmeal with fun flavors out of a little envelope, aka "instant". My fave is Trader Joe's. Here's an interesting comparison of some of the best brands. I like to add even more yummies to my instant oatmeal (since the texture can be a little flat), for ex. dried fruit (cranberries or blueberries depending on the oatmeal flavor) or nuts. And I always top my oatmeal with a nice spoonful or two of yogurt.
Crockpot oatmeal. Have you tried this? Please do if you haven't. There are a lot of recipes online and you may even have one your crockpot cookbook... this one is good and uses steel-cut or Irish oatmeal.
This is TJ's instant cranberry with walnuts added.
Drizzle with honey if you use plain yogurt.