The reason this is called a "Magic" Cake is because you make 1 batter and the cake magically transforms into a 3 layered cake. The top has a light airy spongecake -like- layer. The middle a fresh flavor filled custard, and the bottom a dense "cheesecake -like- layer. It's a fantastic surprise. I actually didn't get it myself, but it was a must try for me.
Now, I have to admit I'm not a "vanilla" person so I went with lemon. If you are not a "Lemon" person feel free to substitute Vanilla Extract for the Lemon juice. Have a great time with this cake. I know I did! Enjoy!