Woolworth's Vanilla Peanut Butter Pie

1/3 cup peanut butter
1 cup confectioners' sugar
1 box instant vanilla pudding
1 baked pie shell
Cool Whip whipped topping

Mix peanut butter and confectioners' sugar; crumble.

Prepare instant pudding according to package directions. Spread most of crumble on bottom of baked pie shell. Pour prepared pudding over. Cover with Cool Whip. Sprinkle with remaining crumble. Chill at least 1 hour.