This is a 50s-vintage recipe for leftover ham that always, as Mom used to say, "hits the spot."  If eternity, it's been said, is two people and one ham, then this is one good use for some of that!

Ingredients

Eight thin slices baked ham

Eight slices Swiss cheese

1/4 onion, finely chopped

Four Kaiser-type bread rolls

2 tablespoons yellow mustard

4 tablespoons butter, softened

Steps

1. Mix onion, mustard and butter together.

2. Slice rolls in half; spread mix on top of rolls and inside each half.

3. Sandwich in two pieces of ham between two pieces of Swiss cheese.

4. Place on baking sheet: bake at 400 degrees for about ten minutes, or until cheese melts and the topping turns golden.

5. Serves four.  Variations: you can use mini rolls for slider-style snacks.  Double the filling recipe for a heartier flavor.