Not technically a meat ad, but meat is there. This proves that as recently as the 1980s the Jell-O people were trying to convince the public that Jell-O could be made into a "salad" and was a legitimate food for people between the ages of 2 and 79.

That brownish stuff it's resting on is a blend of applesauce, sour cream, and cinnamon. At first, I was relieved it wasn't ground ham or something until I thought about the fact it's sour cream and applesauce! :P