1 baked pie shell
1 c. powdered sugar
1/2 c. peanut butter
1 small box instant vanilla pudding
1 1/2 c. milk
1 container Cool Whip

Mix powdered sugar and peanut butter together until crumbly. Reserve 1 tablespoon. Press remaining mixture into pie shell. Mix pudding with milk until thick. Spoon over peanut butter mixture. Spoon Cool Whip on top. Sprinkle with reserved peanut butter mixture on top of Cool Whip.