I've been making my Seven Layer Taco Dip this way for years and it is always a huge hit. I think it is less heavy than the versions with cream cheese. I serve it in a 9-10 inch round, glass quiche dish and the presentation is pretty. Yummy!!
Doesn't serve 56 but enough for a small gathering. I use black beans a layer of fresh salsa and lime juice, add diced green chili's. This is a party pleaser.
This one is a classic that never fails to please. I made mine in a pyrex baking dish that was about 10"x10" and I felt as though 16 oz of cheese was a bit too much (I'd already grated a pound so I put it all on), I think it really depends on how big the surface area your dish of choice is. Also, I would definitly suggest seeding your tomatoes before dicing them, it will prevent the dip from getting wet and it will keep a lot better. This is one of those recipes I can never stop myself from eating too much of.