Prepare a beef strip loin roast by first rubbing it with desired spices and herbs, such as rosemary, salt and pepper, then roasting it in an oven for approximately one hour. It is best to let the roast sit at room temperature for at least one hour before cooking it.
The beef strip loin roast recipe on About.com suggests using a rub created from 1 tablespoon of extra virgin olive oil, 1 tablespoon of minced garlic, 1 1/2 teaspoons of dried leaf thyme, 1 1/2 teaspoons of dried leaf sage and 1/2 teaspoon of dried crumbled rosemary. Next, add 2 teaspoons of sea salt and 1 teaspoon of ground black pepper. Rub the spices, herbs and olive oil all over the roast, and let it sit at room temperature for one hour.
Preheat the oven to 450 degrees Fahrenheit. Put the roast on a roasting rack, and place it in the oven. Let the meat roast for 15 minutes at 450 degrees. Lower the temperature to 350 degrees, and continue cooking the roast for an additional 35 to 45 minutes. Use a meat thermometer to check the internal temperature of the roast after the allotted time has passed.
The temperature of the center of the roast should be between 130 and 150 degrees Fahrenheit. A roast that is cooked to 130 degrees is considered rare, while an internal temperature of 150 degrees signifies a well done roast.