Rhubarb Upside-Down Cake
["3 c. mini marshmallows", "3 c. rhubarb", "1 c. sugar", "1 1/2 c. water", "1 small pkg. strawberry jello", "1 box yellow cake mix"]
["Grease\t9", "x 13-inch cake pan.\tSpread 3 cups marshmallows", "on bottom of pan. In small saucepan, cook rhubarb, sugar and", "water. Remove", "from", "heat. Stir in strawberry jello mix. Cool.", "Mix cake according to directions on package.", "Pour cake mixture", "over marshmallows,", "very", "gently,", "then pour rhubarb mixture", "over the cake mixture, very gently.\tBake at 350\u00b0 for 45 to\t50 minutes. Cool in pan. When serving, turn cake pieces upside down and top with Cool Whip."]
["marshmallows", "rhubarb", "sugar", "water", "strawberry jello", "yellow cake mix"]