1-2 lbs deli-fresh sliced Roast Beef (depending on the # you're feeding)
3-5 Beef Boullion cubes
1-2 cans Beef Broth
1/3 or less can of Cream of Mushroom Soup
1 tsp. Garlic Powder
1 tsp. Seasoned Salt
1 tsp. Worchestershire Sauce
6-12 SOFT French rolls (Francisco brand is great)
6-12 sliced Swiss (or other favorite) cheese
Put first 7 ingredients into a crockpot on LOW setting. Let simmer for 2-4 hours.
Toast or Broil French Rolls, place a couple slices of Roast Beef, and then add a slice of cheese. Close sandwich and the cheese will melt.
Use the remaining juice from the crockpot for au jus, for dipping.
Dip, savor, repeat.
NOTE: I usually just throw in whatever spices I can find. You can add whatever else you think would be good.