1 yellow or white cake mix
3 c. or more rhubarb
1/4 c. sugar
3 eggs, beaten with 1/2 c. sugar
1 1/4 c. water

Put 1/2 of dry cake mix in greased 9 x 13 inch pan. Put rhubarb over cake mix and sprinkle with sugar. Pour egg mixture over rhubarb. Put remaining cake mix over eggs. Pour water over all. Sprinkle with sugar and cinnamon. Bake at 350 degrees for 1 hour.