Rhubarb Cake
["1 regular white, yellow or lemon cake mix", "3 to 4 c. cut-up rhubarb", "2 c. whipping cream", "1 c. sugar", "cinnamon"]
["Prepare cake mix as directed and put into a greased and floured 9 x 13-inch pan.", "Put rhubarb over batter.", "Pour whipping cream over rhubarb and sprinkle with the sugar and a little cinnamon, if desired.", "Bake at 350\u00b0 for 40 to 45 minutes."]
["regular white", "rhubarb", "whipping cream", "sugar", "cinnamon"]