We love this one for special occasions and I find the recipe in the book always works for me - but the original one (in the TM21 book) was different and I always had trouble with that one - it used to over flow the sides every time, then flop in the middle!! Still tasted great, but looked awful. (It had more butter, and I think the amount of baking powder was less, but I can't remember - sold my TM21 and don't have the books anymore.) So I got into the habit of covering it with berries and chocolate or berry nougat (http://quirkycooking.blogspot.com/2010/12/berry-nougat-with-raw-cacao-nibs.html) to hide the collapsed middle! So I'm really happy with the latest version of the recipe - it doesn't collapse in the middle, and now my Torte Caprese looks like this:
(http://3.bp.blogspot.com/_xPQX2B20Qx0/TQIcUUQUgDI/AAAAAAAABPw/IVcZwZTv7DA/s400/torte+caprese1+%25281%2529.jpg)