Instructions

  1. Combine sugar, cornstarch and salt in a saucepan.
  2. Blend in water and 1 cup blueberries.
  3. Bring to a boil, stirring constantly, until very thick.
  4. Stir in butter and lemon juice. Cool slightly.
  5. Fold in remaining berries.
  6. Chill about 1 hour.
  7. Beat heavy cream until thick, add powdered sugar and vanilla.
  8. Spread whipped cream over the bottom of baked pie shell.
  9. Top with blueberry filling. Chill 1-2 hours before serving.