Step #3 Bake in cake layer pans at 350 degrees Fahrenheit until browned & done.
Step #4 FILLING:.
Step #5 For filling, cook rhubarb in 1/2 c water & add sugar until sweet enough for you (Cook until thick, stirring constantly; this is how I cook it).
Step #6 When cakes are cool, split & fill with rhubarb which has been previously cooked & sweetened.