Ham and Cheese Sliders

15 dinner rolls?
Ham
Swiss or Pepper Jack cheese

Dressing
1/2 cup butter
1 t Worcestershire Sauce
2-3 T minced onions
1 T scant poppy seeds
3 T mustard

Slice open dinner rolls, and spread dressing on either side.  Put ham and cheese in rolls.  Pack tightly into a 9x13 pan.  Pour remaining dressing over the top of the rolls (or enough dressing to cover the tops).  Cover with foil.  Bake in a 350 oven for 10-12 minutes.  Remove foil and bake until tops are brown and crispy.