Step 1: Temper the Meat: Remove the roast from the refrigerator at least two hours before you plan to cook it. This allows the meat to come to room temperature, ensuring it cooks evenly throughout. Pat the entire surface of the roast dry with paper towels to help the herb rub stick and to promote a better crust.
Step 2: Prepare the Herb Rub: In a small mixing bowl, combine the minced garlic, chopped rosemary, chopped thyme, salt, black pepper, and onion powder. Pour in the olive oil and stir until a thick paste forms. This paste will act as the primary seasoning layer for your roast.
Step 3: Season the Roast: Place the roast in a heavy roasting pan with the bone side facing down. Rub the garlic herb paste over the entire top and sides of the meat, pressing it firmly into the flesh. Ensure the thickest parts of the roast are well-covered to maximize flavor in every slice.
Step 4: The Initial Sear: Preheat your oven to 450 degrees Fahrenheit. Place the roast in the oven and cook for 15 to 20 minutes. This high-heat start sears the outside of the meat, locking in juices and creating that beautiful golden-brown herb crust that looks so impressive on a Christmas platter.
Step 5: Slow Roast to Perfection: Reduce the oven temperature to 325 degrees Fahrenheit. Continue roasting until a meat thermometer inserted into the thickest part of the beef reaches your desired temperature. For medium-rare, aim for 120 to 125 degrees Fahrenheit, as the temperature will continue to rise while the meat rests.
Step 6: The Essential Rest: Once the roast reaches the target temperature, remove it from the oven and transfer it to a cutting board. Tent it loosely with foil and let it rest for at least 30 minutes. This step is crucial because it allows the juices to redistribute, ensuring the meat is moist and tender when sliced.
