Snickerdoodle Pie

Directions

1. 1
   Roll out pie dough on a lightly floured surface into an 11-inch circle. Fit into a 9-inch pie pan and trim edges so they overhang by 1 inch. Fold dough under to create a double-thick edge; crimp decoratively. Place in refrigerator to chill while preparing filling.
2. 2
   Preheat oven to 350°F. Set a rack in lower third of oven. Line a baking sheet with foil and set it on oven rack. In a small bowl, stir together cinnamon and 1 Tbsp. sugar. In a large bowl, whisk together melted butter, buttermilk, egg yolks, flour, vanilla, salt and remaining 1 cup sugar. Pour into chilled pie shell. Sprinkle cinnamon-sugar over custard.
3. 3
   Set pie on preheated baking sheet and bake for 20 minutes. Without opening oven, reduce temperature to 325°F and bake until pie is set, puffed and golden, about 20 minutes longer. Let cool on a wire rack, then serve, or cover loosely with plastic wrap and refrigerate to serve cold.