20 rolls (semi-hard)
1 1/2 lbs. ham, beef or salami, sliced thin
1 lb. American Swiss or Mozzarella cheese, sliced thin
1 1/2 tbsp. poppy seed
1 sm. onion, diced (or flakes equal)
1 1/2 stick butter
2 tbsp. prepared mustard
1 1/2 tbsp. Worcestershire sauce

Mix last 5 ingredients and whip into paste. Spread on both sides of bun. Arrange ham and cheese on buns and bake at 350 degrees for 20 minutes (50 minutes if frozen.