Place piecrust in a 9" pieplate; fold edges under, and crimp. Process pumpkin and next 9 ingredients in container of an electric blender or food processor until smooth, stopping once to scrape down sides.
Pour pumpkin mixture into prepared piecrust. Bake at 350° for 1 hour and 10 minutes or until knife inserted in center comes out clean. Cool completely on a wire rack. Serve with Praline Sauce.