Add the cold water to a medium saucepan. Stir in tapioca pudding, vanilla pudding, and Jell-O and stir until smooth. Bring the mixture to a boil, stirring constantly until mixture begins to thicken.

Jell-O is a company best known for its gelatin treats which have become synonymous with the brand name, but plenty of people also love the range of Jell-O pudding mixes — after all, it does stand ...