A sampling of the local (either locally grown or a specialty of a place) that the Mister and I were able to sample on the Road Trip.
Butter Tarts in Ontario: a tart somewhere between shoofly pie and a pecan-less pecan pie, but buttery-er. One had raisins in it.
Pasties in the UP: labeled as both Cornish and Finnish, depending on where you buy them, we had both traditional pasties (with rhutabaga, beef and potato) and some newer variants (with carrots in one and with egg and cheese in another).
Indian Tacos at Crow, MT, Wall SD and in the Badlands. Since the stand in Interior, S.D. that used prairie turnip flour in their Indian Tacos closed, I think that the Trading Post across from the Little Big Horn Battlefield Site has the best Indian Tacos available.
Caramel Rolls (both with and without nuts) in South Dakota. They are certainly not unique to South Dakota, but there were unusual quantities of them available and almost nothing labeled as a "Cinnamon Roll".
Grape Pie in Naples, NY. Naples was a bit out of our way, but if we couldn't make a long detour for grape pie, what sort of grand road trip were we on? We ended up buying a set of four small tartlets from Cynthia, who was selling them out of her front door. We should have purchased a pie, to better see how the grapes work as a filling, but the tartlets were definitely yummy.
We also sampled non-regional baked goods made with regional fresh produce: our mothers' apple crisps, peach tart from an orchard stand on the Niagira penninsula, tart cherry gallette on Door County and, while not on our road trip, Imitation Ice Queen (who was in town for the weekend from Philadelphia) and I baked a very tasty apple pie using mostly scabby apples from our very own vacant lot apple tree yesterday.