2 tbsp. mustard
2 sticks butter (softened at room temp.)
1 onion, grated
1 tbsp. Worcestershire sauce
3 tbsp. poppy seeds

Mix all this well and spread on opened party rolls. Top with boiled ham cut in small squares. Top with grated Swiss cheese.

Place top on rolls and freeze. Remove from freezer and let set at room temperature a little while. Bake in foil pan 350 degrees 10 to 12 minutes. Makes 72 (24 rolls to a foil pan).