Ham & Cheese Sliders

1-2 pkgs Hawaiian sweet rolls
1 onion, minced
1 stick of butter
3T Dijon Mustard
2-3 t. Worchestershire Sauce
3 t. poppy seeds
1 1/2 lbs shaved deli ham
8-10 slices of Swiss or American cheese

In saucepan melt buitter, add onion and cook until onion is soft and tender.  Add, mustard, Worchestershire sauce, and poppy seeds.  Simmer 5 minutes. 

Slice rolls across middle of pkg, leaving the top and bottom of rolls intact.  Place in a foil lined baking dish and spread 2/3 of the butter mixture.  Layer ham and cheese, and place the top of the rolls on the cheese and ham.  Top with the remaining butter mixture.

Bake for 20 minutes @ 350.