What is this?

Nisey55 said

Wonder does the hollowed out bread make it one sandwich or another?
I thoroughly approve though.
The sesame seeds too.

Ok, I'm through discussing a sandwich that I don't know the name of

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lol. It's a Pennsylvania thing. You should see the issue we have about what is chicken pot pie. Does it have a crust? Does it have noodles? (Man, I miss the food I grew up with.)

But did it make you hungry? Or did you go, as a southern girl, what in the heck IS that thing?