Masso Osteria offers an off-the-menu burger
![](https://develop.reviewjournal.com/wp-content/uploads/2018/08/11009305_web1_NOW-SERVING-AUG29-18_ne201882410220756.jpg)
Masso Osteria
It’s not on the menu, so you’ll have to ask for it. It’s a half-pound of juicy ground beef, topped by a tangle of caramelized onions and a drizzle of truffle aioli. The Masso Burger is $18 during Social Hour, from 5 to 7 p.m. daily, at Masso Osteria at Red Rock Resort.