2 sticks melted butter
3 tbsp. prepared mustard
1 sm. onion, grated
1 1/2 tbsp. poppy seeds
1 tbsp. Worcestershire sauce
Buns
Ham slices
Swiss cheese slices

Melt butter, mustard, onion, seeds, and Worcestershire. Refrigerate until spreadable. Cover tops and bottoms of buns with mixture. Add ham and cheese slices; wrap each in foil. Bake 10 to 15 minutes at 350 degrees.