9-inch single pie pastry, baked
3/4 cup sugar
3 tbsp. cornstarch
1/8 tsp. salt
1/4 cup water
4 cups blueberries
1 tbsp. butter
1 tbsp. lemon juice

Combine sugar, cornstarch, and salt in saucepan. Add water and 2 cups blueberries. Cook over medium heat, stirring constantly, until mixture comes to a boil and is thickened and clear. Mixture will be quite thick. Remove from heat and stir in butter and lemon juice. Cool. Place remaining 2 cups raw blueberries in 9 inch baked pie shell. Top with cooked berry mixture. Chill. Serve garnished with whipped cream.