Well as a former chef and from Canada, I have made a few in my time, the historical info the second lady gave is fine but will sound like you cut and pasted it from the net and garner you a poor mark, true it is a Quebecoise winter treat, made with maple syrup, if your from Canada it is made alot like our famous Butter tarts with out the raisins, or if you from the US it is similar to a Pecan pie with out the nuts, I used real maple syrup, condensed milk, brown sugar, melted butter, a tablespoon of flour, egg (whole or yolks), a dash of vanilla, I like to part baked the shell of the crust to keep it from going soggy, and if you heat the ingredients in a sauce pan and then when just cool add the 2 whole eggs it sets up firmer , the lattice top is a bit tricky but the cooked based and the filling warmed make it easier, I just lay the strips of dough over the filling and they rise when it cooks, there a bit more covered but still visible. You can make this pie in a regular pie pan or shallower tart tin with a false bottom or larger tart tin with a solid based.
I serve it with a dollop of real whipped cream perfumed with maple syrup and a dash of orange zest.