My daughter, 6 years old, has recently been diagnosed with Celiacs Disease. I'm on the hunt for good -- doesn't need to be great/fine dining -- simply good dining experiences -- ideally on the UES.
Italian -- you could imagine -- is the biggest challenge. Also breakfast options would be nice. I am familiar with Opus and Peters but am eagerly looking for more family dining options.
Menupages.com allows you to search for gluten free options. You can search by neighborhood, and at the top of the list, there is a features option, where you can filter for gluten-free items. The only restaurant on their UES gluten-free list is Opus, which as you know, is delicious.
Mozzerelli's (at 23rd and Park, so not on the UES) makes decent gluten-free pizza, and they outsource amazing single-serving GF desserts.
Babycakes in SoHo offers amazing desserts as well- should you need a gluten-free birthday cake for your daughter.
Friedman's in Chelsea Market has many gluten free options, and they serve a great breakfast--in addition to lunch and dinner. I also second the recommendation for Blue Smoke--they have a gluten free menu, their staff is very accomodating--and they are very kid-friendly. When she gets older, they even have a decent GF beer!
Risotteria is great! It's a small place but the food is great. Unfortunately, it's in the Village and definitely not a family dining option but I would strongly recommend it, regardless, perhaps in the day for lunch. BTW, on Tuesday's, from noon until 11pm, they serve an array of huge gluten-free pasta bowls to share.
Two years ago, I went to Ted's Montana Grill near Rockefeller Center with my co-workers, one of whom has celiac disease. Not bad and I think your 6 year old daughter may like the food: http://www.tedsmontanagrill.com/
Sambuca on the UWS is decent Italian and they definitely have a gluten-free menu. This place is very large and the windows are always cheerfully decorated.
They have family-style dining (i.e. large plates) as well as individual entrees.
My friend's 13 year old daughter, who has celiac disease, LOVES this place.
While not on the UES, the M72 crosstown stops directly across the street.
I will also recommend Nice Matin for breakfast/brunch. Again, not on the UES but the M79 crosstown stops on the corner. While not a gluten-free restaurant, they do have options and they typically get favorable reviews. Might want to call first:
Here are two additional websites that you may find helpful. Have fun!:
Ted's Montana Grill
110 W 51st St, New York, NY 10020
270 Bleecker St, New York, NY 10014