How come I'm instantly pleased when I think about jelly on a burger, but peanut butter gives me a little bit of pause? A rare burger with arugula and jelly is a great burger choice. Sure, it's a little weird, but it works. Kind of like it's a vinaigrette on a burger. Peanut butter is so dry that you'd need a really juicy burger. The bun would need to be perfect as well. I don't see it playing, but I've been wrong before. There's only one way to find out: eat it. That's never a bad option.
I think the only real problem I have with it is the tomato and lettuce. I'd skip on that with the peanut butter combo. That's too many vegetables on one burger. Yes, I'm counting peanut butter as a vegetable. There's is nothing wrong with that.