Gee, I can't remember when I last had a sundae. Maybe when I worked in a drive-in restaurant in the 60's. I do remember banana splits there. But if I had one it would be crushed peanuts on top.
We had a place called the Imperial Tearoom when I was a kid. My favorite, a Mexican sundae, with vanilla cream, chocolate syrup and peanuts with the skins on. 25 cents.