Put sliced roast beef, french onion soup, and Worcestershire sauce in a sauce pot and heat until steamy.
While meat is heating, cut hoagies in half and slice each half along length. Toast on broil in the oven, with the outside of the bread down and the soft part up.
Once meat is nice and hot, place 3 slices on a half of hoagie roll using a slotted spoon. Top with a slice of provolone and a little "gravy" from the cooked meat if you want.
Serve with pickle slices. My mom also likes to add banana peppers to her sandwich. Sometimes just a half is enough for me, and sometimes I can't eat just one. Either way, I am super satisfied with this tasty sandwich!