Peanut Butter Pie

1/2 cup chunky or smooth peanut butter
1 cup confectioners' sugar
1 package instant vanilla pudding
1 baked 9-inch pie shell

Blend peanut butter and confectioners' sugar together. Mix well. Spoon 1/2 of the mixture into baked pie shell.

Prepare vanilla pudding according to directions. Pour over peanut butter layer and chill for 2 hours. Put remaining peanut butter mixture over top.

Serve with whipped cream, if desired.