Preheat oven to 350°F. Prepare cake mix according to package directions. ... Sprinkle sugar and strawberry jello over rhubarb. Place marshmallows ... over and turn upside down. Allow to cool before serving.
Arrange peaches in buttered 13x9 inch pan. Combine strawberry and peach Jello and cinnamon ... with butter. Prepare cake mix according to package instructions. ... top with Cool Whip.