Sliced ham, thinly sliced
Swiss cheese, sliced

SAUCE:

Mayonnaise
Dij on mustard
Garlic salt (to taste)
Onion, finely diced

Use Kaiser rolls, French bread or any kind of bun, depending on your group serving. Spread sauce on buns or bread - top half and bottom half. Alternate ham and cheese, as many layers as you want. Place top on bottom layers and wrap in foil. Heat through until cheese melts in 350 degree oven, about 1/2 hour. Serve hot.