Split entire package of rolls without separating.
Mix ingredients and spread on top and bottom.
3 T. brown mustard
3 T. Poppy seeds (too much for my taste)
1 small onion minced
1 stick butter melted
1 t. Worcestershire sauce
Thinly sliced Swiss cheese
Thinly sliced deli Ham
Layer ham and cheese over the butter rolls. Bake at 400 degrees for 10 min. or until cheese is melted. Use a knife to separate the rolls for easy serving.