FILLING:

3 sticks butter
3 tsp. mustard
3 tsp. poppy seed
1 tsp. med. onion

2 pkg. Pepperidge Farm party rolls
Parmesan cheese, grated
1 pkg. chopped ham

Split 2 packages of rolls. Spread filling generously on top and bottom of rolls. Sprinkle 1 package of chopped ham on rolls. Sprinkle Parmesan cheese on ham. Wrap rolls in foil. Bake at 350 degrees for 10 minutes. Freezes well. Thaw before heating to serve.