With only a few simple ingredients, you'll have the perfect taste of summer with Grandma's Rhubarb Mousse.
Mix rhubarb, sugar and water together and cook until rhubarb is tender.
Add the package of jello and mix. Chill in the fridge until the mixture cools completely and starts to gel, about 1 hour.
Fold in whipped topping until everything is combined and transfer to your serving container. Chill until firm, about 1 hour.
TIP: Add a few strawberries to the rhubarb mixture as it cooks to make Strawberry Rhubarb Mousse!
TIP: Add the rhubarb and whipped topping mixture to a baked pie shell or graham cracker crust and chill until firm for another variation of this sweet treat.