If I had access to good French bread, banh mi. If not, with access to good tomatoes a delicious club. If neither was an option probably some Italian sandwich with random Italian meats and peppers.
that looks like a francesinha with egg on top. if so, the shiny stuff is gravy, which is what makes them special to different places...everyone keeps their recipe secret
A bunch of low quality ingredients came together like a Voltron to make what was a pretty tasty sandwich.
Sautéed onions and mushrooms then also threw some rosbif in the pan, cooked some baby Swiss on the onions/mushrooms. Toasted bread, hit with light Mayo on both sides, maters then onion/mushrooms/meat. Would again.
Probably a known trick around these parts, but I've been using the bagel setting on my toaster lately to only toast one side of the bread. Nice change up.