After trying a half ice-cream sandwich (birthday party cookie and sweet cream ice cream) we've already planned out at least two more trips to Bakerbots - one to try a different flavour combo and one to get this combo again.
I don't envy their terrible real estate (a tiny storefront barely visible from Bloor and easy to walk past even for patrons of Ossington Station's unmanned back entrance). But do yourself a favour and seek them out.