Ham Party Rolls
["1/2 lb. soft margarine", "1 tsp. Worcestershire sauce", "1 small diced onion (optional)", "3 Tbsp. poppy seed", "3 Tbsp. mustard", "1/3 lb. Swiss cheese", "2 pkg. party rolls", "boiled ham slices"]
["Mix first 5 ingredients and spread on rolls.", "Top with ham and cheese.", "Wrap in foil.", "Bake at 400\u00b0 for 10 minutes.", "Serve warm."]
["margarine", "Worcestershire sauce", "onion", "poppy seed", "mustard", "Swiss cheese", "party rolls", "ham slices"]