Pasties were one of the reasons to go up north here in Michigan. Unfortunately I’m not sure you can even get them any more under that simple name.
They are still available in the “Pasty belt”, which basically consists of the mining regions of the Michigan UP, Minnesota’s iron range and the Black Hills of South Dakota. They basically followed the Cornish tin miners who came to the US after these mines had played out there in the later part of the 1800s.