Use rib-eyes sliced very thin. No Fat. Make a cheese sauce using about a pint of half and half. While slowly heating it stir in a cup of shredded provolone and a cup shredded mozzarella being careful not to let the cheese break. Assemble the sandwich ( I like sauteed peppers and shroons also ) and spoon on a liberal slathering of the sauce. MMMMMMMM Good.