My favorites for breakfast are the croissant benedict from Carnation Cafe' & the Mickey waffles from Goofy's Kitchen.
For lunch or dinner, I LOVE the gumbo from Cafe' Orleans & Blue Bayou (they're both exactly the same); the gumbo in the bread bowls, not so much. (Now, if they could serve the CO/BB gumbo in a bread bowl, I'd probably have that for every meal whilst in the Park

). The pommes frites from CO are not to be missed, either.
There's a wonderful potpie served at Carnation Cafe' around the holidays, with turkey and cranberries, that's sooooo good

. The regular chicken potpies there are delicious as well, along with their famous potato soup and open-faced meatloaf sandwich. I swear, Chef Oscar lets Tinkerbell sprinkle pixie dust on all the food there...it's all so yummy!
For quick service, I like the pastas at Redd Rocket's in Tomorrowland, especially the alfredo noodles. The chicken sausage in a pretzel romm at Village Haus in Fantasyland is also good. The meat skewers at Bengal BBQ in Adventureland make a great snack.
If you're ever there around Halloween, the pumpkin spice muffins are delicious! Same goes for if you're there around the holidays & have the soft gingerbread cookies that are wearing chocolate dipped mouse ear hats.