The slipper is $14 for everything you see in my picture. I ordered it a week before (and you can order it up to 48 hours before). I called 1900 Park Fare directly but because I wanted the mini cake too, they transferred me to the bakery.
The mini cake was $25.
We all preferred the mini cake as the white choc and moose got to be too much but it was yummy, just rich!
There is a restaurant at GF (I think it's Narcooses) that I read has the slipper dessert on their menu. I would called the GF and ask them if that restaurant does, in fact, have it on their menu.
I also have read here that you can get the slipper dessert at dinner at the Castle. You call them directly and ahead of time and then remind them upon arrival.
You must tell the waiter upon arrival of your order.
I definitely preferred the taste of the cake. Not quite as rich.
Let me know if you have any more questions.