In addition to the bun, the festive burger features a flame-grilled beef patty, ham, Swiss cheese, beer mustard, caramelized onion, and shredded Romaine lettuce.
You can find it at Red Robin restaurants nationwide through October 31, 2018.
The chain is also running a limited-time, dine-in deal at participating locations where, every Wednesday, kids can get for $1.99 with any adult entree purchase. The $1.99 pays for any kids' menu entree, a Bottomless beverage and a side.
Photo via Red Robin.
