So, the first recipe I come to is "Mock Apple Pie". You make it from Ritz crackers. People in the Depression era had Ritz crackers but not apples? If you want an apple pie, why not make apple pie? Apples are abundant most places, store very well, and are easily canned. Novelty I guess. I've had this pie before, when I was a kid. My recollection was it tasted salty.