Mix butter, mustard, Worcestershire, poppy seed and onion. Split rolls in ... butter mixture. Add ham to both sides. Place cheese ... enough to melt cheese.
Cut rolls, top from bottom, ... onion, butter and poppy seed. Heat, do not boil. ... bottom layer with ham and cheese. Replace to layer ... serve on warming tray.
Mix together butter, poppy seed, Worcestershire sauce, Gray Poupon ... above mixture. Place ham on the bottom half of ... warm. Makes approximately 20.