Hawaiian Ham Rolls

2 pkgs Hawaiian rolls, cut in half (Hawaiian bread, just the bun kind)
1 1/2 # shaved ham
2 c shredded mozzarella
2 T dried onion
1 T poppy seeds
1 T Worchestershire sauce
1 T mustard (more or less what you like)
1 stick melted butter

Grease 9 x 13, slice rolls in half, layer bottoms in pan. Cover with ham, cheese, top of rolls. At this point, I cut between rolls, ham, etc. Melt butter, add ingredients and pour over sandwiches. Cover and bake at 350 for 20-30 minutes.