Slow Cooker Philly Cheesesteak Sandwiches

Ingredients

• 2 cups shredded mozzarella or provolone cheese
• 1/2 teaspoon black pepper
• 1.5 pounds ribeye steak, thinly sliced
• 1/4 cup poblano peppers, sliced, optional
• 2 tablespoons olive oil
• 1 cup yellow onion, thinly sliced
• 1 green bell pepper, thinly sliced
• 1 red bell pepper, thinly sliced
• 1 tablespoon Worcestershire sauce
• 1 1/4 teaspoons salt
• 1 teaspoon garlic powder
• 1 3/4 cups beef broth
• 6 Italian hoagie rolls
• 1/4 cup sliced jalapenos, optional
• 1 cup mushrooms, sliced, optional
• 7 cloves garlic, minced