Mangiacake is a great little cafe, specializing in paninis. I used to eat lunch here a lot when I was working at Mount Sinai Hospital. It's also a good place to eat if you are visiting the AGO.
They have a small patio out front (on McCaul) and a bigger patio in the back. Staff are really warm and personable. They're always happy to make recommendations and kindly moved me from the patio to an indoor table when tons of bees started surrounding me once my food arrived!! (They were very apologetic about the bees!).
There are tons of yummy, fresh paninis with names like "Vespa" and "Woodbridge". Portions are pretty big. You can add a salad and there are so many to choose from: chick pea salad, mushrooms, tomato/bocconcini, etc. Soups are also great in the winter. I also recommend their arangini (italian-style risotto ball, fried and served with tomato sauce -- amazing!). I don't think it is on the regular menu, but they offer it occasionally as a daily special.
All in all, a great little lunch spot in a nice location!