- Preheat oven to 450°. Roll out dough to fit a 9-in. pie plate. Transfer crust to pie plate. Trim crust to 1/2 in. beyond rim of plate; flute edge. Line unpricked crust with a double thickness of heavy-duty foil. Fill with pie weights, dried beans or uncooked rice.
- Bake 8 minutes. Remove foil and weights; bake 5-7 minutes longer or until light brown. Cool on a wire rack. Reduce oven setting to 375°.
- Meanwhile, in a large saucepan, combine sugar and cornstarch; stir in milk until smooth. Bring to a boil. Reduce heat; cook and stir 2 minutes or until thickened and bubbly. Remove from heat; stir in butter and vanilla. Transfer to crust; sprinkle with cinnamon. Bake 15-20 minutes or until golden brown. Cool on a wire rack; refrigerate until chilled.