3-Layer Rhubarb & Orange Cake with Orange Buttercream

Yesterday afternoon I had a bee in my bonnet to try yet another rhubarb and orange cake, using the recipe for the 3-layer Fresh Cranberry Orange Cake* but substituting chopped fresh, local rhubarb for the cranberries. However, I lacked the sour cream and didn’t want to go to the store since it would be too … More 3-Layer Rhubarb & Orange Cake with Orange Buttercream