Spread cream cheese, blended with a little whipping cream to soften, over bottom of pie shell. Wash berries, hull, drain. Place half of the berries in cream cheese whole. Mash remaining berries until juice is extracted. Bring juice to a boiling point and slowly stir in sugar and cornstarch which has been mixed together. Cook slowly for about 10 minutes, stirring occasionally. Cool and pour over uncooked berries in pie shell. Place in fridge until very cold. decorate with whip cream before serving.