Steph, it's your DD's birthday so I would say have some - but that's my opinion. If I were you, I would have a small piece and take off any icing and count it as 1S and 1Fat. According to the tip cards, a slice of birthday cake would be 2S and 1fat...but with the cookie you're minus the icing and it would be a much smaller piece than cake. My DD's birthday is a weakness for me. I can't not have a small piece of cake...I mean we gave birth to them for crying out loud!