The beef patty is really soft and moist because we marinated it in banana and then you get a kick from the Sriracha sauce at the end."
When asked how many calories she thinks is in the US$15 bun, she replied: "We don't count calories here, we like to have fun."
The PB&J Bun Burger is part of PYT's Burger of the Week special, and will be available until the end of January.
It isn't the first crazy bun mash-up the eatery has crafted.
Past inventions include the Mini Krispy Kreme Burgers with Chocolate Covered Bacon, the Mac 'N Cheese Burger and the Spaghetti Burger, featuring a bun crafted entirely out of noddles.
PYT says of its latest offering: "Yeah, about those New Year's resolutions ... This is the PB&J Bun Burger! Deep fried kettle chip coated PB&J sandwiches are buns, banana-sriacha marinated juicy beef patty, applewood bacon on top.
"This is the over-the-top burger delight that will get 2014 started right!"
The restaurant previewed a photo of the PB&J Bun Burger on its Facebook page last Monday.
Comments from bemused followers included "how does one even come up with something like this?", "that's just too much" and "that sounds delish!"
Ms Malcolm estimates that they have sold a few hundred of the limited-edition buns so far and the phone has been ringing off the hook with inquiries.
- DAILY MAIL