Preheat the oven to 450 degrees F (230 degrees C). Line a 9-inch pie plate with pie crust.
Combine evaporated milk, pumpkin, sugar, eggs, maple syrup, maple extract, cinnamon, salt, vanilla extract, and nutmeg in a bowl. Mix until well blended using an electric mixer. Pour into the pie crust.
Bake in the preheated oven for 10 minutes. Reduce heat to 325 degrees F (165 degrees C) and continue baking until a knife inserted into the pie comes out clean, about 30 minutes.