Steak Sub - Penguin Books Australia

Ingredients

• 1 pound (450g) bone marrow bones, cut lengthwise
• 3½ tablespoons sea salt, divided
• 1¾ teaspoon black pepper, divided
• 5 tablespoons olive oil, divided
• 3 green bell peppers, diced
• 2 red onions, diced
• 1 teaspoon dried oregano
• 2 pounds (900g) ribeye steak
• 3 tablespoons butter
• 2 garlic cloves, peeled
• 2 sprigs rosemary
• 4 sprigs thyme
• 4x 6-inch (15cm) sub-style rolls
• 16 ounces (450g) provolone cheese slices (about 8 slices)