Sandwiches - cooking recipe

Ingredients

2 sticks butter
2 Tbsp. poppy seed
1 tsp. dry mustard
1 1/2 tsp. Worcestershire sauce
1 medium size onion, chopped fine

Preparation

Mix all the ingredients together.
Place mixture on a bun, then slice of ham and slice of Swiss cheese.
Cover with foil and bake at 350\u00b0 for about 10 minutes.