1 PKG.SWISS CHEESE, 1-2 TSP. WORCESTERSHIRE SAUCE,4 TBLSP MUSTARD,2 TBLSP.POPPY SEED,1 SMALL ONION FINELY CHOPPED,60 DINNER ROLLS, 3/4C. BUTTER,1 1/2LBS.THINLY SLICED HAM,MIX MUSTARD,POPPY SEEDS AND ONIONS.SLICE ROLLS IN HALF.SPREAD WITH BUTTER. TOP WITH SAUCE,HAM,CHEESE. BAKE 350 FOR 20 MINS. DELICIOUS,WE DO THIS ONE ALOT FOR CHURCH OUTINGS OR HOLIDAYS.