Fresh Blueberry Pie - cooking recipe

Ingredients

4 c. fresh blueberries
1 c. sugar
1 c. water
3 Tbsp. cornstarch
1 frozen pie shell

Preparation

Bake pie shell.
Cook 1 cup of fresh blueberries, sugar, water and cornstarch together until mixture begins to thicken and turns blue.
Into cooled pie shell, put remaining 3 cups uncooked blueberries.
Pour cooked mixture on top.
Refrigerate; top with Cool Whip.