Very fun! Only downside to me is there is no way to lose (from what I can tell) and nothing to spend all my money on. I wish that after like 10 customers the day would end and you could unlock new recipes, add more ovens or cooling racks, expand your case, stuff like that! I also kind of wish that if you take too long serving a customer you get some money taken away or you lose or something.
I played for a good few minutes, served 30 customers, and it certainly was a whole lot of fun! I wish there was more of a way to predict what items I should be baking as well, right now it seems customers have a completely equal chance to ask for any item. I would like to be able to have some strategy while I'm playing and a bit more multitasking.
Overall, solid concept! I like it a lot :)