2 sticks melted butter
1 1/2 tbsp. poppy seed
1 tbsp. Worcestershire sauce
1 small onion
3 tbsp. mustard
party rolls (in foil pkg.)
Swiss cheese slices
shaved ham

Mix first 5 ingredients and refrigerate until mixture is spreadable. Split party rolls vertically. Cover tops and bottoms with butter spread. Add ham and cheese slices. Can freeze rolls in original package.

Bake at 350°F (covered in foil) for 35 to 45 minutes (frozen) or 30 minutes (thawed). Slice and serve warm.