Slow-Roasted Beef Tenderloin with Herb Potatoes Step-by-step instructions

Before you start

Before beginning, ensure the beef tenderloin is at room temperature by removing it from the refrigerator about 30 minutes before cooking. Thoroughly pat the meat dry with paper towels to ensure a good sear. Prepare the potatoes by washing them well and slicing them into uniform halves. Gather all your seasonings, fresh herbs, and equipment so everything is within reach.

Having an organized workspace allows you to focus on managing the heat and timing, which are the most critical elements of this roasting process. Verify that your oven is accurately preheated to the target temperature to avoid any fluctuations that could affect the final texture of the roast.

Instructions

Seasoning and Prep

1. 1Prepare the Roast and Potatoes
   Preheat the oven to 400°F (200°C). Prepare the beef tenderloin and toss the halved baby potatoes with the fresh herbs in a bowl to ensure they are evenly coated for roasting.
   Look for Potatoes should be evenly coated in herbs.
   Tip Ensure the potatoes are cut into uniform sizes for even cooking results.

At the end of this phase, the beef should be uniformly seasoned and the potatoes should be well-coated in herbs. Everything is ready to be transferred to the hot pan. Check that your oven is stable at the required temperature and that all your tools are accessible.

This preparation phase is the foundation for a successful meal, ensuring that each component is ready to cook efficiently without any last-minute adjustments or scrambling.

Searing and Roasting

2. 2Sear and Roast
   Place the beef tenderloin in a hot cast-iron pan and sear the exterior until browned. Arrange the seasoned potatoes around the beef in the pan. Transfer the pan to the oven and roast until the beef reaches an internal temperature of 145°F (63°C). Once finished, let the meat rest at least 3 minutes.
   Look for The beef should be browned on all sides before roasting.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Use a heavy-duty oven mitt when handling the hot cast-iron pan.

The beef will have a deep, browned crust from the initial sear, and the potatoes will begin to soften as they roast in the pan. The kitchen should smell savory and aromatic. Check the internal temperature of the beef with a thermometer to ensure it is progressing toward the 145°F (63°C) goal. This phase is where the flavors meld together, so keep an eye on the heat to avoid burning the herbs or the exterior of the roast.

Resting and Serving

3. 3Rest and Serve
   Remove the pan from the oven and carefully transfer the beef to a carving board. Let the meat rest for at least 10 minutes to allow the juices to redistribute. Slice the tenderloin against the grain and serve alongside the roasted potatoes with the pan drippings.
   Look for The beef will be succulent and easy to slice after resting.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Resting is crucial for maintaining the moisture and tenderness of the meat.

The beef will be resting on the carving board, looking succulent and perfectly cooked. The potatoes should be tender and beautifully golden brown. The pan juices should be rich and flavorful, perfect for drizzling over the sliced meat. Before carving, verify that the resting time has been met to guarantee maximum tenderness. The dish is now ready to be plated and enjoyed, reflecting the care taken throughout the roasting process.

Common mistakes

Avoid overcrowding the pan, as this can cause the ingredients to steam rather than roast, preventing the development of a golden crust. Another common mistake is failing to sear the beef properly; take your time to brown all sides to maximize the flavor.

Do not skip the resting period, as cutting into the beef too soon will cause the flavorful juices to escape, leading to a drier result. Finally, ensure the oven door is kept closed during the roasting process to maintain the necessary heat, as opening it frequently can significantly increase your total cooking time and lead to uneven results.

How to tell it’s done

The beef is perfectly done when it reaches an internal temperature of 145°F (63°C) as measured by a reliable meat thermometer inserted into the thickest part of the roast. At this stage, the meat should be succulent and tender, with a slight resistance when sliced.

The potatoes should be fork-tender and golden brown, signaling they are ready to be served. Always remember to let the meat rest for at least 10 minutes; this allows the internal temperature to stabilize and ensures the juices remain inside the meat, resulting in a superior eating experience.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest