Mix first six ingredients together with wire whisk- batter will be slightly lumpy.
The batter is very thin.
Pour into unbaked 10” or 11" pie crust.
Bake approximately 45 minutes or until set. If you see that it is not setting up properly, cover crust with foil and bake an additional 10-15 minutes until set.
Let cool before cutting.
Recipe by Amish 365 at https://www.amish365.com/amish-cinnamon-pie/