1/2 c. (crunchy) peanut butter
2/3 c. powdered sugar
1 1/2 c. milk
1 lg. box (instant) vanilla pudding
1 prebaked pie crust

Mix peanut butter and powdered sugar. Sprinkle 1/2 of mixture into pie crust. Mix milk and pudding, beating until thick. Put milk mixture into pie crust. Sprinkle remaining peanut mixture into crust and cover with Cool Whip; refrigerate.