The original recipe came from a cookbook of an old roommate - for the life of me, I can't remember the name of it - and I've tweaked it somewhat over the years. I like to make up a batch and freeze them for those nights when cooking dinner for myself just seems like the worst. It's a great replacement for those highly processed yet convenient TVP-based products you can find in the frozen food section, and the taste! Oh man. It's a lot of chopping & grating, but it's worth it, if you've got the time.
($12 Polenta-Crusted Sweet Potato & Bean Burger recipe below.)