I did it! I successfully veganized my beloved Nasty Nachos! And it was really easy, too. Just substitute canned black beans for the ground beef, and cheddar Veganrella (or other vegan cheese) for the cheddar cheese, then do the rest as usual. It couldn't be easier! I used 2 cans of black beans, drained and rinsed, but next time I think I'd use 3.
I've said it before: this isn't a pretty dish, but the taste more than makes up for it. Yum!