My Nebraska relatives call them runzas and they're a tradition at Christmastime for at least one of my older cousins, who has a huge family. The filling I use is hamburger, cabbage and onion with salt, pepper and a little tabasco sauce. I kind of doubt the tabasco is traditional. The dough I use has cream cheese and is very easy to handle. I haven't made them in years, but this thread makes me want some. It's interesting that many different cultures have similar things by various names, such as empanadas and ravioli and wontons. They are many variations, but the concept of a dough enclosing a filling is very popular.
I'm posting on here weeks late because I was just browsing the recipe threads looking for cooking inspiration, and I'm glad I did!