Slice top from rolls and place bottoms in baking pan.
Layer ham and cheese on rolls.
Replace tops.
Combine butter, poppy seeds, mustard, Worcestershire, and onion powder in a saucepan. Mix well.
Drizzle over rolls. I make these ahead of time and refrigerate until the butter is firm but this is not necessary.
Cover with foil.
Bake at 350° for 30 minutes or until cheese melts.
Uncover and cook for 2 additional minutes.
Serve warm or cold. Enjoy!
*Recipe can easily be cut down to half and ingredients adjusted to your liking
