1 (8 oz.) pkg. cream cheese, softened
1/2 c. sugar
1 c. peanut butter (can be either smooth or crunchy)
1 tbsp. vanilla
8 oz. container Cool Whip

Blend cheese and sugar together until smooth, then add vanilla and peanut butter. Fold in Cool Whip. Spoon into ready baked Keebler pie crust. Chill until firm. Freeze well.