Cut each roll in half, lengthwise, arrange the bottom halves on the bottom of a greased 9" x 13" baking pan or baking sheet

Layer each roll with ham slices, cheese & pineapple half. Place the top half of the rolls back on/

In a bowl, mix together the butter, Worcestershire, mustard, brown sugar & onion powder. Pour sauce over sandwiches, drenching each one. Cover tightly & marinade at least 4 hrs or overnight.

Preheat oven to 350°F, bake for 15 minutes uncovered or until cheese it melted and bun tops are golden