The Cereal Bar is an interesting experiment in that the place serves cereal all day. I have certainly had my share of cornflakes and oatmeal at odd times of the day when at home, but that would not be the case if I had a multitude of options, such as you would in the shopping complex below Commerce Court.
They have cold and hot cereals and parfaits. And a small assortment of nutritional bars. I am a big fan of their birchermueslix, if you can find it before it is sold out in the morning. The ability to pick the custom toppings for the hot oatmeal is the only control you have on the end product.
Prices are reasonable -- C$4.95 for the large bowl. But they do not accept US cards, so expect to get back lot of change after you pay with your Canadian bills. I have almost outgrown my taste for their cereals over the last year, but will visit occasionally.