Slow Cooker Italian Beef Sandwiches

Bahan-bahan (10 porsi)

• Two 14.5-ounce cans beef broth
• 1 medium sweet yellow onion, (chopped)
• 1 teaspoon freshly ground black pepper
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1 teaspoon dried parsley
• 1 teaspoon minced garlic
• 1 whole bay leaf
• Two .7-ounce envelopes dried Italian salad dressing mix
• 5 pounds chuck roast
• 16 ounces jarred pepperoncini
• 10 hoagie rolls
• 10 slices Swiss cheese
• sauteed peppers, onions and/or mushrooms, (optional)