In 9"x13" pan, layer in order given:

4 c. chopped rhubarb, fresh or frozen
1 c. sugar
1 (3 oz.) pkg. dry strawberry Jello
1 box dry white cake mix, sprinkle over

Pour 1 cup cold water over top. Pour 1/3 cup melted butter over next. Be sure to "sprinkle" all layers in order given. Bake at 350 degrees for 1 hour.