Little Sandwiches Diane
["1 stick margarine", "1 small onion, chopped", "1 Tbsp. mustard", "1 tsp. poppy seed", "Swiss cheese and ham", "3 doz. mini hamburger buns (Pepperidge Farm)"]
["Cream together margarine, onion, mustard and poppy seed. Spread mixture on both halves of each bun.", "Place a slice of ham, slice of cheese, then another slice of ham again, all trimmed to fit.", "Cover with bun top.", "(You can make up to 2 weeks ahead and freeze in foil.)", "Heat for 15 minutes at 350\u00b0 or until cheese is melted."]
["margarine", "onion", "mustard", "poppy seed", "Swiss cheese", "buns"]