I had heard about this cake from Terry and she went on and on about how easy and how good it was. She said just sprite zero and a cake mix made a great cake. I bought a white cake mix and the sprite zero and the cupcakes were wonderful. They were good without icing, but my family likes icing so I bought a can of icing and when I figured out how much went on each cupcake the cupcake was only about 170 calories. The reviewers on this recipe also recommend cherry coke zero and chocolate cake and other variations. A real treat with no oil or egg yolks.