9/4/15 Update: Menu updated.
Cheshire Cafe is located in Fantasyland underneath Mad Tea Party.
All of these items are available elsewhere with the exception of the cake cups, but Cheshire Cafe rarely has a line of more than a couple people, making it easy to visit early in the morning for a quick snack or throughout the day.
At $4.59 or a snack credit, the cake cups may be a fun little snack, but I would personally head for a more satisfying sundae.
No more cake cups. RIP cake cups. 🙁