I made Oats in a Jar! But rather than using up the last of a nut butter and letting the oats and nut butter cream together (which still sounds delicious and which I still have to try) I used up some apple butter by making raw oats. This was cooling, filling, really tasty and creamy, and pretty healthy, I'd venture.
I did top it with raw walnuts. I wish I had more of this apple butter, actually!