1Mix water, sugar and cornstarch in 2-quart saucepan. Heat just to boiling over medium heat, stirring constantly. Boil and stir 1 minute; remove from heat. Stir in gelatin until dissolved. Refrigerate about 30 minutes, stirring occasionally, until mixture thickens.
2Fold berries into gelatin mixture. Pour into crust. Refrigerate about 2 hours or until set. Serve with whipped cream. Store covered in refrigerator.