I've got a lot of knish recipes from when I was all interested a few years ago, and looked some more up yesterday. My favorite from searching so far -
I fell in love with the knishes in my former marina del rey grocery store's deli section (Gelson's, if any reader is local to MdR) - some combo of potato and spinach and deliciousness. Can't just eat one... They didn't always have them, sigh.
Besides the smitten kitchen recipes, I've got four more on my desk top. There seem to be a lot of opinions out there for how to make them just right. Anyway, knish making seems to be a perfect way for me to avoid household paperwork and similar stuff.