Good old Sloppy Joes!
I probably have made 100’s of versions of the good old Sloppy Joe. Sometimes using whatever was in the pantry or refrigerator at the time or even making a somewhat gourmet Sloppy Joe.
Sloppy Joes are served in Church basements for functions, school cafeterias and at many gatherings.
This sandwich is made several hours ahead of time then refrigerated. Easy to prepare in the morning then slice it for lunch or even dinner!
According to Wikipedia, the first U.S. reference to panini dates to 1956, and a precursor appeared in a 16th-century Italian cookbook, the sandwiches became trendy in Milanese bars, called paninoteche, in the 1970s and 1980s.