Ham And Cheese Balls
["1 (3 lb.) canned ham, sliced very thin", "10 oz. pkg. Swiss or Mozzarella cheese, shredded", "3 pkg. (24 count) dinner rolls", "2 sticks margarine", "3 Tbsp. mustard", "2 Tbsp. Worcestershire sauce", "3 Tbsp. poppy seed", "1 medium onion, chopped fine"]
["Mix magarine, mustard, Worcestershire sauce, poppy seed and onion together in skillet.", "Cook over low heat until onion is tender.", "Split rolls in half; brush margarine mixture over bottom and top half of rolls.", "Put ham on each slice of bottom layer; next spread cheese evenly and over ham layer.", "Put top of rolls back on ham and cheese.", "Place in same pan rolls came in.", "Cover with aluminum foil.", "Bake for 25 to 30 minutes at 350\u00b0."]
["ham", "Swiss", "dinner rolls", "margarine", "mustard", "Worcestershire sauce", "poppy seed", "onion"]