Prep Time 10 minutes mins
Cook Time 45 minutes mins
Resting Time 10 minutes mins
Total Time 1 hour hr 5 minutes mins
For the best results, let the roast beef come to room temperature before cooking to ensure even cooking. Use a meat thermometer to check that the internal temperature reaches 145°F (63°C) for medium-rare. Customize your sandwich with additional toppings such as sautéed onions or mushrooms for added flavor.