Ham And Cheese Sandwiches
["1/4 lb. butter or oleo", "2 tsp. mustard", "2 tsp. poppy seed", "2 Tbsp. mayonnaise", "1 small onion, chopped", "1 lb. chipped ham", "1 lb. Swiss cheese", "sandwich buns (about 15; more or less, depending on ham and cheese used)"]
["Mix", "together butter, mustard, poppy seed, mayonnaise and onion. Spread on", "half", "of open bun.", "Add ham and cheese slice. Wrap in foil. Bake at", "325\u00b0 for 20 minutes.", "May be made ahead, frozen and then baked at 300\u00b0", "for", "30", "minutes.", "I", "sometimes use", "celery seed in a smaller amount rather than poppy seed."]
["butter", "mustard", "poppy seed", "mayonnaise", "onion", "ham", "Swiss cheese", "sandwich buns"]