1 cup sugar
2 tbsp. flour
1 cup pineapple juice
1 egg, beaten
1 tbsp. butter
1 Large container Cool Whip

Mix all ingredients, except Cool Whip, together in a saucepan. Cook over medium heat, stirring constantly until thick. Let cool completely. Fold in Cool Whip. For a stronger flavor, use a medium container of Cool Whip.