Holsteins Replacement Named at Cosmo: Mariposa Rosa Mexican Restaurant

By Scott Roeben, on August 06 2024
2 min read 4 comments
Everything Else

Out with passable burgers, in with Mexican.

A successor has been named for the former Holsteins Shakes and Buns at Cosmopolitan, which we told you was closing long before it was announced, as is our way.

The new concept: Mariposa Rosa Mexican Restaurant.

They haven’t shared a logo yet, so we made one. “Mariposa Rosa” means “pink butterfly” in Spanish.

In a rare turn of events, the Las Vegas Review-Journal was the first to share news about Mariposa Rosa. While the “paper of record” lacks the integrity to give attribution for original reporting, we aren’t that petty, probably.

What the Review-Journal didn’t say is how hard it is to get excited by another Mexican restaurant.


The restaurants at Cosmo overall are fairly underwhelming, other than Superfrico, so anything new in the mix is welcome.

The restaurant line-up changes (anticipate more) follow Cosmopolitan being integrated into the MGM Resorts family of casinos. Holsteins just wasn’t cutting the mustard.

We just saved this restaurant 10 grand on a food photo shoot.

The casino’s Identity loyalty program recently became MGM Rewards.

The construction of Mariposa Rosa Mexican Restaurant will reportedly cost $2.9 million and will be a Gen3 Hospitality concept.

Gen3’s collection of underwhelming restaurants include Elephant Bar (formerly in Vegas-adjacent Henderson, permanently closed), as well as Haute Doggery and Flour & Barley pizza at Linq.

The only other Mexican offering we can think of at Cosmo is China Poblano by Jose Andres, the rare miss by the famous chef.

Mariposa Rosa Mexican Restaurant hasn’t shared a logo, menu, Executive Chef, opening date or renderings of the interior of the restaurant yet. Since the advent of A.I., we don’t have to wait for a lot of those things.

So much time and money saved, and all we ask in return is please add chicken parm to the menu.

There was no further information about when Mariposa Rosa Mexican Restaurant might open, but in the meantime, head across the street to Nacho Daddy at the Miracle Mile Shops.

Update (9/18/24): Cosmopolitan has confirmed the new Mexican restaurant’s name will be Amaya Modern Mexican Restaurant. Mariposa Rosa Mexican Restaurant was a placeholder name. The concept is set to open January 2025.