My dad grew up in eastern Ontario, in sugar shack country. The most common applications of maple syrup in his home were pouring over pumpkin pie and cornbread, or, if he was especially well-behaved, as a dip for white bread. These dishes win for most direct conveyance of syrup to mouth without drinking from the bottle, but I need something (slightly) more refined.
My Quebecois dessert of choice is pouding chômeur. "Chômeur" means unemployed. Here it functions as a substantive, so this is "unemployed person's pudding." "Poor man's pudding" is a more natural sounding translation. Whatever you call it, it's a fantastic, unadulterated way to enjoy maple syrup.
A simple batter of creamed butter and sugar, eggs, flour, and milk is spooned into a baking dish filled with maple syrup and cream. The batter looks like islands on a lake. Once cooked, the islands expand through the baking dish and cover the syrup entirely. The syrup thickens, partly by reduction and partly from mixing with the batter.
Once the top has browned thoroughly, squares are cut from the cake, and the maple syrup is ladled over them. Even though the dish is extremely rich, it benefits hugely from the presence of ice cream.
Ricardo of Food Network fame has a good recipe here.