This is a perfect summer pie. I've often used the fat-free versions of cream cheese, sour cream and Cool Whip, and it's still wonderful.
- In medium bowl, with mixer beat cream cheese, sour cream and sugar until well-blended.
- Fold in Cool Whip.
- Spoon half of mixture into pie crust; top with 1 cup blueberries.
- Spread with remaining cream cheese mixture.
- Scatter with remaining blueberries.
- Cover with plastic wrap and refrigerate at least 5 hours.