As I've shifted to avoiding terrestrial vertebrate meat unless I know its provenance, I wanted to update my recommendations: I now am loving the veggie burger "ding dong" style, which means with shredded cabbage, chunky peanut butter, and sriracha sauce. The burger itself is bean based, but gets a great crunchy outside that goes well with the smooth interior. I will still usually pair it with the tuna melt for that amazing ginger kick.