I got this recipe from http://www.frugalupstate.com/recipes/recipe-cheaters-strawberry-rhubarb-jam/
Cheaters Strawberry Rhubarb Jam
(freezer jam or boiling water bath canned)
7-8 C of rhubarb cut into 1 inch chunks
4 cups of sugar or to taste
1- 3 oz pkg strawberry Jell-O
1. Wash and cut up rhubarb stalks into half inch pieces and place in a large bowl.
2. Mix sugar in with the rhubarb chunks. Cover & let sit for at least an hour until the juices come out of the rhubarb.
3. Cook rhubarb mixture over medium high heat, stirring and mashing a bit until it is soft and the pieces of rhubarb have mostly disintegrated. Add jello. Stir until jello is dissolved. Pour mixture into freezer containers and freeze.
Yields about 3 pints