what if corn is out of season can you use frozen and how much

I don't see why not, though I would strongly urge frozen over canned. Most frozen veggies these days will substitute nicely for fresh, and corn is no exception. Hope you enjoy it. - S

Corn is one of the few vegetables in which frozen is almost as good as fresh. We use frozen in most recipes because it is more convenient. Use the same amount as you would fresh. You don't necessarily even need to thaw it; just extend your cooking time.