Two restaurants that we have returned to the past few trips are Trattoria al Forno at The Boardwalk & Trail's End at Fort Wilderness Campground, which is an easy boat ride from MK.
Trattoria al Forno has very good italian food. I have enjoyed their seasonal risotto, which changes and their ravioli which also varies.
Trail's End is a buffet which is less expensive than all the other Disney buffets and has something for everyone. It's a rustic setting and has great comfort food favorites: fried chicken, peel and eat shrimp, mac & cheese, chili, baked potato bar, veggies, pasta, salad bar, cornbread, soft serve ice cream, a carving station which was brisket the last time we went, plus a dessert table.