5 c. rhubarb, sliced
1 c. sugar
1 pkg. strawberry gelatin
3 c. miniature marshmallows
1 pkg. yellow cake mix

Mix first four ingredients and place in 9 by 13 pan. Mix yellow cake mix as directed on package. Place over rhubarb mixture in pan. Bake as directed on cake mix package. Turn upside down when warm and serve with ice cream or Cool Whip.