Peanut Butter Pie

1/2 C. Peanut Butter (either crunchy or creamy)
1/2 C. sugar
8 oz. cream cheese, softened
8 oz. Cool Whip
Graham cracker crust or standard pie crust 
(I have also tried Oreo, shortbread and vanilla wafer crusts 
              --all are delicious)

Mix peanut butter, sugar and cream cheese until smooth and well-blended.
  Fold in Cool Whip. 
 Pour in pie crust and chill in the refrigerator 3 hours. 
 If you're in a hurry, chill it in the freezer for 45 minutes.
Sometimes I top the pie with Oreos, chocolate Magic Shell or Reese's Pieces.