Slow Cooker French Dip Sandwich

Bahan-bahan (18 porsi)

• 3 to 4 lb beef round roast (trimmed)
• 1 tbsp minced garlic (minced)
• 1 tbsp fresh rosemary (or 1 tsp dry)
• 1 tbsp fresh thyme (or 1 tsp dry)
• 1 tsp kosher salt
• 1/2 tsp ground black pepper
• 2 to 3 14.5 oz cans Swanson's low-sodium beef broth
• 1 tsp Worcestershire sauce
• 10 whole peppercorns
• 1 bay leaf
• 1/2 large onion (cut into chunks)
• 1/2 tablespoon extra-virgin olive oil
• 3 large onions (thinly sliced)
• 1/2 tsp Kosher salt
• 1 large red bell pepper (cored, seeded and sliced into strips)
• 1 large green bell pepper (cored, seeded and sliced into strips)
• Sargento Reduced Fat Provolone or Mozzarella Slices
• whole wheat baguettes or rolls (cut into 2 oz pieces)