Kathy'S Strawberry Rhubarb Cake
["3 c. sliced rhubarb", "1 c. sugar", "1 small pkg. strawberry Jell-O", "1 cake mix, mixed as directed", "1 pkg. mini marshmallows"]
["Grease 13 x 9 pan. Mix first 3 ingredients and set aside. Combine cake mixture and rhubarb mixture; pour into cake pan. Pour marshmallows on top. Bake at 350\u00b0 for 1 hour."]
["rhubarb", "sugar", "strawberry", "cake", "marshmallows"]