Step 1

Slice top from rolls and place bottoms in baking pan.

Step 2

Layer ham and cheese on rolls.

Step 3

Replace tops.

Step 4

Combine butter, poppy seeds, mustard, Worcestershire, and onion powder in a saucepan. Mix well.

Step 5

Drizzle over rolls. Refrigerate until butter is firm or overnight.

Step 6

Cover with foil.

Step 7

Bake at 350° for 30 minutes or until cheese melts.

Step 8

Uncover and cook for 2 additional minutes.

Step 9

Serve warm or cold.