Bring pineapple to a boil. Add peach Jello and plain gelatin dissolved in ... Set aside to cool until Jello thickens. In the ... buttermilk to Cool Whip. Add Cool Whip mixture ... mold. Serve when firm.
Mix cornstarch, sugar and jello together. Add water. Cook until thick (may use microwave). Cool until very thick. Mix in ... Top with Cool Whip. Refrigerate.