1/2 lb. soft butter
3 tbsp. prepared mustard
1 tsp. Worcestershire sauce
1/2 med. grated onion
12 sesame or plain sandwich buns
11/2 lb. chipped chopped ham
12 slices baby Swiss cheese

Mix together butter, mustard, Worcestershire sauce and onions. Spread on sides of buns. Fill with meat and cheese. Wrap in foil and bake at 325 degrees for 25 minutes.

NOTE: These sandwiches can be baked, frozen and reheated.