Unfortunatley no - only at Meadows snack bar. And unless something has changed recently, you can use snack credits at the trading posts for just about any food item under $4.
About a week ago I had sent an email to Disney and asked why the food selection for the dining plan was so poor at the Fort. This is the response I received:
Dear:__________
Thank you for the follow-up letter. (To be honest with you I don't know what they meant by "follow up letter. This was the first I sent)
Our Food & Beverage team at Disney's Fort Wilderness Resort & Campground
is already working on adding options that address your concerns. It's a
top priority of the Resort's leadership to incorporate more Food &
Beverage offerings into the Disney Dining Plan. Because the team is
still working on logistics regarding dining locations, there is no set
date for when the new program will be available. Ask our call agents
about that part of the plan when next making your reservations.
I hope your next visit is filled with many more magical memories.
Best regards,
Steve Rivers
I would imagine a few more requests couldn't hurt!