I am addicted to these, and so is everyone I give them to. Although they're quick to throw together, they do take nearly an hour to bake, so what I suggest is, make a batch at the weekend and then you will have the oaty, chewy bars ready and waiting for those days when you have to snatch breakfast on the hoof.
Mind you, they are just like milk and cereal in bar form, so there's nothing to stop you nibbling at one with your morning coffee at home every day. If you are not a morning person, believe me, they will make your life easier.
They also store well; indeed, they seem to get better and better. So just stash a tin with them and remove as and when you want.
Photo by Lis Parsons.
Recipe posted by Nigella