There is a kosher butcher in Plainview (Long Island, NY) called Kosher Food Emporium that has a small, but good takeout department. They have good entrees like chicken marsala, hawaiian chicken, wasabi chicken, and other types of dishes. In addition, they have a nice asortment of side dishes. They will heat up the food for you if you request.
Hunki's (one of the original owners) has a pizza place in Plainview that is superior to Hunki's in West Hempstead.
Plainview is located not too far from Huntington, Hicksville, Bethpage, etc.