Ingredients
5 cups sliced fresh or frozen rhubarb, thawed and drained1 package (6 ounces) strawberry gelatin1/2 cup sugar2 cups miniature marshmallows1 package white or yellow cake mix (regular size)Whipped topping, optional
Preparation
Place rhubarb in a greased 13x9-in. baking pan. Sprinkle with the gelatin, sugar and marshmallows. Prepare cake mix according to package directions; pour batter over marshmallows.
Bake at 350° until a toothpick inserted in the center comes out clean, 40-45 minutes. Cool for 10 minutes; invert cake onto a serving plate. Serve with whipped topping if desired.