Ham and Cheese Rolls

Sliced Ham and Swiss Cheese (we also like Havarti Cheese)
24  Hawaiian Dinner Rolls
1 stick butter or margarine
1/2 cup sugar
1 tsp poppy seeds
1 tsp mustard

Melt butter, sugar, poppy seeds, and mustard.  Cook until it thickens.  Open rolls and spread with mixture.  Add ham and cheese.  Spread remaining mixture on top of rolls and bake at 350 until cheese melts.