Chill drained fruits. Dissolve gelatin in boiling water; add fruit juice. Chill until slightly congealed. Fold in fruit and marshmallows. Pour into 11x7 baking dish which has been rinsed with cold water. Chill until firm.
For topping: Combine sugar and flour; blend in egg. Gradually stir in juice. Cook over low heat until thickened, stirring constantly. Remove from heat and stir in butter; cool. Fold in whipped cream and spread over chilled gelatin layer. Sprinkle top with cheese. Chill. Gelatin salad may be made a day ahead of time, but topping must be made the day it is served. Serves 12