Prepare Cream Cheese Piecrust in a 9-inch pie plate; set aside.
Preheat oven to 350°.
Combine sweet potato and next 5 ingredients (sweet potato through 1 egg) in a food processor, and process until smooth. Spoon mixture into prepared crust. Combine 1/2 cup brown sugar and next 5 ingredients (1/2 cup brown sugar through 1 egg); stir well with a whisk. Stir in pecans. Pour pecan mixture over sweet potato mixture. Bake at 350° for 1 hour or until almost set; shield edges of piecrust with foil after 20 minutes. Cool on a wire rack.