Meet the newest rule-breaker at Block 16 Urban Food Hall—Naughty Patty’s, where the classic diner gets a rebellious makeover. This isn’t just another burger joint; it’s a bold, flavor-packed experience. At Naughty Patty’s, the smash burgers are sizzling, stacked, and sinfully delicious, seared to crispy perfection and loaded with crave-worthy toppings. Pair it with golden fries and a rich, creamy concrete, and you’ve got a meal that’s equal parts nostalgic and unapologetically indulgent. So go ahead—break the rules, take a bite, and get a little naughty.
So many better smash burgers available in Vegas. Was not impressed. Dry beef, bun was too small for the patty. Nothing special at all.
EY
Elliot Yoon
Feb 16, 2026
5.0
We got takeout from Naughty Patty's while staying at the Cosmo. As to be expected with everything else in the resort, the food is extremely pricey for what it is. A fried egg add-on was $4, which seems excessive. However, we thoroughly enjoyed our lunch. The smash burgers were cooked nicely and the fries were super crispy and the seasoning was great. The service was surprisingly quick and friendly.
Overall, it is a very solid option for quick food while at the Cosmo.
MR
Mindy Rodriguez
Feb 4, 2026
5.0
We came to Naughty Patty's for the Pop Up with Sam the Cooking Guy. We tried the Naughty Sammy burger. One of the best burgers we have ever tried! The Pork carnitas SMASHED in to the Smash burger was so flavorful! The Seasoned fries were perfectly seasoned and crispy. The staff were very friendly. The restaurant is a fun vibe in a convenient location in the Cosmopolitan.
JH
Jaran Higley
Jan 30, 2026
4.0
Ok hambuger, super expensive for what you get! The price we paid we could have went to an ok restaurant with tip for the same price.
AA
Aznin Atl
Jan 16, 2026
2.0
The meal, priced at 25, included burgers, fries, and bottled beverages, which is a reasonable value considering its location on the strip. However, the burger itself was quite disappointing. The patty was significantly overcooked, resulting in a very dry texture, and it lacked sufficient seasoning. The seasoned fries, on the other hand, were acceptable.