It depends on what type of food you are looking for, right there at the Hard Rock Hotel you have The Palm (a world renowned steakhouse). At the Portofino there are a couple of Italian restaurants. At City Walk I would recommend NBA City or Emeril's. At Islands of Adventure (if you have park access on that day, Mythos is very good, and Confisco's is a lot of fun.
If you want to go off Universal Property, you could hop over to International Drive and try Bahama Breeze (very very good)or Ming Court (if you love good Chinese food). If you need a place for Easter Brunch you can try Capprecio's at the Peabody on International drive. It is always outstanding. (make reservation early)