5 c. rhubarb, cut 1/2-1" thick
1 c. sugar
1 (6 oz.) Jello (may use strawberry or strawberry banana)
3 c. miniature marshmallows
1 white OR yellow cake mix, mixed according to package directions

Layer in greased pan, as given. Bake at 350 degrees for 45 minutes. Check cake part with toothpick for doneness.