Le Papillon makes a great Tourtiere, but its eat-in only. They change their menu seasonally, so check their website to ensure its on their winter menu.
----- Le Papillon 69 Front St E, Toronto, ON M5E1B5, CA
Summerhill Market has tourtieres. St. John's Bakery used to make fantastic ones that I would buy at Fresh From the Farm, but FFtF hasn't had them in a couple of years, so I don't know if St. John's still make them.
----- Summerhill Market 446 Summerhill Ave, Toronto, ON M4W, CA