Italian Beef Sandwiches

Italian Beef Sandwiches
3-4 lb. boneless beef chuck roast
1 teaspoon salt
1 teaspoon pepper
1 teaspoon garlic salt
1 T. Italian seasoning
2 green peppers, diced
2 onions, diced
1 box mushrooms, sliced
1 jar sliced pepperoncini
2 small cans tomato sauce
Sliced provolone or Mozarella cheese
Sandwich rolls, toasted

Spray a crockpot.
Combine the salt, pepper, garlic salt and Italian seasoning to make a rub.  Rub into the roast.  Put the roast in the slow cooker.  Add the vegetables and some of the juice from the pepperoncini.  Add the tomato sauce.  Cover and cook on low for 10 hours or high for 5 or 6.  Using two forks, shred the meat.  Mix well.  Put some of the mixture on top of a split, toasted crusty sandwich roll.  Top with cheese.  Put under the broiler until the cheese is melted.