If ever you make the drive between Montreal and Toronto, look for the Big Apple bakery just off the 401. You can't miss it. It's the place with the (duh) Big Apple that you can see for miles. They bake their own pies on site and you can actually watch their entire bakery in process through large viewing windows. They sell a wide selection of pies ranging from apple to rhubarb to berry and nut mixtures and others. All their pies are enormous and relatively inexpensive, usually about $10 per massive pie. They also sell smaller versions of their pies if you are a single person.
[Note: This thread was split from the Quebec board at http://chowhound.chow.com/topics/762181 -- The Chowhound Team]