Heat oven to 425°F. Knead dough until softened and no longer crumbly. Flatten into a round; place between 2 sheets of cooking parchment or waxed paper. Roll into a round 1 1/2 inches larger than top of 9-inch pie plate.
Carefully peel off top sheet of paper. Replace paper to cover loosely; carefully turn dough over, and remove second sheet of paper. Use paper to carefully turn dough over into ungreased pie plate; remove paper. Press dough firmly against bottom and up side of plate. Flatten edge with fork or crimp for decorative edge.
In medium bowl, beat eggs slightly with whisk. Beat in pumpkin pie spice, pumpkin and condensed milk. Pour into crust-lined pie plate. Cover edge of crust with strips of foil.
Bake 15 minutes. Reduce oven temperature to 350°F. Bake about 35 minutes longer or until knife inserted in center comes out clean. Cool 30 minutes. Refrigerate about 3 hours or until chilled. Serve with whipped cream. Cover and refrigerate any remaining pie.