Kimonos at Swan for sushi. For quality in WDW, the simple nigiri options are a bargain.
Flame Tree's spare ribs full slab platter (get the onion rings, please.) This is shareable for two to three people, adn it's pretty decent qs "in park" food, it's not just the quantity.
Made to order sub sandwiches at Fuel in Dolphin. BARGAIN!
Many ppl love the fajita platter at Pecos Bill. It's easily shareable for two ppl. I found it to be horrific, but that's just my opinion, plenty of pl love it.
Schwarma Platter at Tangierene Cafe - I'd only get the lamb - the chicken is more of a chicken "product." It weirds me out a little - like when people call turkey loaf "turkey" - yeah, that's not turkey, and I don't want it for a sandwich, thanks. turkey is not a rectangle, I've had turkey before.
Make a dessert party a dinner! Check the savory options, and see if you can spin those into a dinner to get a better perceived value. We can do this easily, and I think WDW has made a mistake calling them "Dessert Parties."
Paying OOP - just eat at the same places you normally would, especially if you LIKE those places, and order what you'd like- you might find that you spend less money. You might order much less, and still be just as full, or well, maybe less full.
I'd also suggest strategic snacks in the room and also park bags:
Cereal, milk, spoons and bowls (or whatever can float your boat for a breakfast in your room that makes sense.) Am park time is precious, imo. But, we are am people. We are up and at em ready to go for rope drop or emh. A bowl of cereal (or whatever) makes an easy, quick, start to the day while fam members are getting ready..
Non sugar laden snacks for the park.
Jerky, and peanuts are in our bag. Stuff that won't get crushed, or melt. We'll get plenty of sugary treats form vendors. We are pineapple float hounds to our core. Ice cream at Ample Hills and the joint in the France Pav will generally see us a few times per week.
Starbucks Via if you are coffee ppl. Their packets for cold sweet drinks are pretty decent - just need some cold water, ice, and a decent cup to make a coffee treat on the go.
None of this stuff is out of the ordinary for us. It's just not overpaying for not so great food, just because we're at Wallyworld. And even tho we walk ten miles a day, we still somehow manage to come home a few lbs heavier! It's not like we don't still eat and drink more than we should! Good luck - hope you find some winners to share, we are always looking for more.
I'll also add that Teppan Edo and Hoop De Doo, all in all, are not bad bets for OOP considering the entertainment. HDDR can actually be cheaper oop.