Ham Rolls

Ham Rolls  
3 pkgs pull apart party rolls 
1 1/2 lb boiled ham  
1 lb swiss cheese   

Mustard sauce: 
2 sticks margerine, softened  
1 med onion (or to taste) diced fine  
3 Tbsp mustard  
1 tsp worcheshire sauce  
3 Tbsp poppy seeds (or to your taste)   

Mix together mustard sauce until smooth.
Cut rolls in half (save aluminum trays).
Spread both sides of rolls with mustard sauce.
Put 3 layers ham and 1layer cheese or however
you want the layers to be.
Put top on rolls and put back in aluminum trays.
I like to cover them with tin foil. Bake at 400 for 10 - 15 mins.
Cut and serve.