I'd recommend the Sukothai restaurant at the Le Meridien village (opposite the airport).
I did a really silly thing last year because I like this restaurant so much. I booked a JFK-DXB-JFK return on impulse... in Y class! I got there on Friday evening, went to the restaurant, and flew back on Sunday morning. Complete madness.
It did bag me a load of EK miles though
Cheers,
Rick