Hidden gems in the vicinity of Mt. Desert Island?

We’ll be spending a week in Maine in mid-September, staying fairly close to Acadia. Lobster will be on the menu quite often; the home we’re renting comes with a lobster steamer on the deck, and we’ll be a stone’s throw from two lobster pounds. But where should we go for dinner on those nights when we don’t feel like cooking? Where do the locals go? What are some of the don’t-miss places that aren’t written up in every travel guide? Driving up to an hour isn’t out of the question, either.

Thanks for your recommendations!