Was it a chocolate sheet cake with white frosting and had these sugar pieces on top of the cake with like the entire McDonald's cast of characters?

My father owned the McDonald's on route 9 in Framingham from 1990-1996 and I would help out with weekend birthday parties. Each children would get a happy meal and it was always followed by those cakes. They were official McDonald's cakes. Hopefully this helps.

I miss their boxes of mini chocolate chip cookies. Not the best, but pretty good for McDonald's.