we use "original" quaker oats and they are always a big hit. we like to add dried fruit or fresh fruit and chopped nuts to it.

We add milk and brown sugar, DH must have cinnamon.

It never really seems to take that long to cook, while it's cooking I'm cleaning up other messes in the kitchen anyway.
Bmccasland, thanks for doing the experiment. Crock pot cooking of oats seems like way too much work for me!