1 pie shell
1 pt. blackberries
1 sm. pkg. blackberry Jello
3/4 c. boiling water
2 tbsp. cornstarch
1 c. water
1 c. sugar
1 sm. container Cool Whip

Bake pie shell until brown. Set to cool. Mix blackberry Jello with boiling water and set aside. Cook cornstarch and 1 cup sugar until thick and clear. Mix this with Jello mixture and add blackberries. Refrigerate until chilled. Put in pie shell. Top with Cool Whip and refrigerate until ready to serve.