Hawaiian Ham and Cheese Sandwiches

My kids love these little sandwiches. I love them because I can make them the night before, let them sit and put it in the oven for an easy dinner on busy nights. Great to serve and showers or parties. I got this recipe from World Wide Ward Cookbook.
2 dozen King sweet Hawaiian Rolls

1-1/2 lb. thin sliced ham

24slices swiss cheese

1 Cup butter

4 Tbsp Worcestershire sauce

1 tsp garlic powder

2 Tbsp poppy seeds

Cut rolls in half. Place desired amount of ham and one slice of cheese on each roll. Fold sandwich back together and place in baking pan. In bowl melt butter. Stir in Worcestershire sauce and garlic powder. Pour mixture over rolls and sprinkle with poppy seeds. Place foil over top and refrigerate for 6-8 hours or over night. Bake at 350 degrees for 15-20 minutes.