Since I hadn't seen one on here yet, figured I would post a review of Cosmo's Rose.Rabbit.Lie from our Vegas trip this weekend.
Booked a reservation for dinner for two and were seated in the Study. Rose.Rabbit.Lie has multiple rooms with different themes, the Study seemed to be the quietest (and least fun) of what we saw. If I were booking again, I'd specifically request the music room. Your personal preference may vary. Only one entertainment act came through this room the entire time we were there (about 2.5-3 hours). We did get to see the action in the other rooms when walking through to use the restroom... a polka band with a lead singer I can only describe as Magenta from Rocky Horror singing pop songs (Macklemore, Nikki Minaj), a pair of tap dancers dancing on every available surface (including bars and tables), but in our room, we got two guys on the bar with hats for about 30 seconds.
But to the important part... the food. (And I'm including prices just because they're nearly impossible to find online.) Note that everything is served as small plates, except for certain dishes on the menu under the heading of "feasts." We only sampled from the small plates menu. While this was just enough for us, I would probably order a third "main" for two people if dining again.
Beet Salad - $8
Roasted beets of various colors/varieties, yogurt, watercress, balsamic - This was delicious and what you'd expect from a beet salad. Beets were all cooked to perfection. It's a simple beet salad, so not much to say other than it was really good.
Orange Fennel Salad - $8
This was my husband's choice, not my favorite thing on the menu. Well-balanced flavors, very good, but we both preferred the beet salad to this one.
Oysters on the Half Shell - $13 (four oysters)
Tasted like oysters on the half shell. Not much to review, was served with traditional accompaniments, very good.
Short Rib Stroganoff - $17.00
I'm still having dreams about this one. Probably the best thing I ate in Vegas this trip. Tender short ribs topped with thin, chewy, wide noodles with fresh herbs layered into the noodle. A brilliant sauce and mushroom top each piece of short rib with the noodle carefully folded over the top. Order this. Order multiple plates of this, so you don't have to share.
Steak Frites - $32
While this was good, I wouldn't order it again. Steak was cooked perfectly and the "frites" were airy puffs of potato (totally empty inside), closer to a three-dimensional potato chip. They were fun to eat, but I'm sure there are better things to experience on the menu (like more of the stroganoff).
Dessert - Cookie Jar - $15
We were told by our waiter that the cookie jar is currently being sold a little "overstuffed," as they are trying new recipes daily to see what works best. We received about a dozen cookies/bars (2 each of 6 varieties), a large cakeball, and several truffles. The to-die-for option in our jar was a salted chocolate cookie sandwiched with Valrhona chocolate cream. In fact, I ate all of those and didn't share with my poor husband. (In my defense, I thought there were more!)
All in all, the service was good, but sometimes spotty (spot-on service at the beginning, then a really... long... wait... for the dessert menu). The waiter was great, very knowledgeable and friendly and took the time to chat at a few points during the meal about options, the cocktail program, and Vegas in general.
Speaking of the cocktail program, it is pretty incredible. There is a special cocktail menu that is only served in the Study, in addition to the regular menu. They also had several hard-to-find spirits that weren't listed on any menus, but were available to order by the glass (not just by the bottle).