Preheat oven to 450°. On a lightly floured surface, roll dough to a 1/8-in.-thick circle; transfer to a 9-in. pie plate. Trim crust to 1/2 in. beyond rim of plate; flute edge. Refrigerate 30 minutes., Line unpricked crust with a double thickness of foil. Fill with pie weights, dried beans or uncooked rice. Bake on a lower oven rack until edge is light golden brown, 15-20 minutes. Remove foil and weights; bake until bottom is golden brown, 3-6 minutes longer. 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 until golden brown, 15-20 minutes. Cool on a wire rack; refrigerate until chilled.