From New York City to Philadelphia - where to eat

I make the road trip from New York City to Philadelphia about once a quarter taking the New Jersey Turnpike, and I'd love to hear more places that are slightly off the beaten path.  I think you can take a parallel route along the US 1 and the 95 if that is more interesting.  I'm interested in coffee shops (fancy or otherwise), doughnut shops, or regional specialties.  I already know about Harold's New York Deli in Edison, NJ. 
 
Note I'm not looking for anything inside of New York City or Philadelphia, but only what's in between.
 
Thanks!