Flapper pie
Flapper pie, or the forgotten Prairie pie, is a vanilla custard pie topped with meringue within a graham cracker crust. The pie is a staple of the Canadian prairie culture. At the Salisbury House chain of restaurants in Winnipeg, it is sold as "wafer pie". Whiskey, peach leaves, lemon peel, or vanilla may be added to the custard filling of flapper pie.
Source: Wikipedia