3/4 c. sugar
3 tbsp. cornstarch
1/8 tsp. salt
1/4 c. water
4 c. blueberries
1 tbsp. butter
1 tbsp. lemon juice
Cool Whip or LaCreme
1 (9 inch) baked pie shell

Combine sugar, cornstarch and salt in saucepan. Add water and mix well. Add 2 cups blueberries, cook over medium heat, stirring constantly until mixture comes to a boil and is thickened and clear. (This will be quite thick.) Remove from heat and stir in butter and lemon juice, cool. Add the remaining 2 cups berries. Pour into baked pie shell. Chill. Serve with whipped topping.