Hi Jane,
Welcome to the Moms Panel!
I certainly understand picky eaters, I have a few of my own! If you're looking for a great meat and potatoes meal I would suggest the
Liberty Tree Tavern in the Magic Kingdom. If you dine there for dinner, you'll eat family style which means your family will share a platter of roasted turkey, carved beef and pork loin. For sides you'll have plenty of mashed potatoes, stuffing, vegetables and macaroni and cheese. It's all you care to eat, so feel free to take seconds!
If you are looking for dining outside of the parks, I would suggest the
Whispering Canyon Cafe at the Wilderness Lodge, the
Yachtsmen Steakhouse at the Yacht Club Resort or
Raglan Road at Downtown Disney.
This was a great question, I'm hungry now!