1 pkg. sm. dinner roll (heat and serve 24 per pkg.)
1 stick butter, softened
1 1/2 tbsp. poppy seed
1 1/2 tbsp. mustard
2 tbsp. finely chopped onion (optional)
1/2 lb. cheese, grated
1/2 lb. ham, sliced thin
2 tbsp. mustard
3 tbsp. sugar
3 tbsp. milk

Split rolls in half. Mix next 4 ingredients. Spread on roll halves. Place ham and cheese on one half. Cover with other half. Can be made ahead to this point and frozen wrapped in foil. Defrost before heating. When ready to heat, mix last 3 ingredients and spread over tops of rolls. Heat in a 350 degree oven until hot and cheese is melted.