Preheat your oven to 450 degrees Fahrenheit. Place a rack in a roasting pan and set aside. In a small bowl, combine the salt, parsley, rosemary, thyme, and pepper.
1 teaspoon kosher salt, 1 teaspoon dried parsley, 1/2 teaspoon dried rosemary, 1/2 teaspoon dried thyme, 1/4 teaspoon ground black pepper
Coat the sirloin tip roast in olive oil. Then coat it in the fresh garlic. Finally, coat it with the herb mixture. Place it on the rack inside the roasting pan. Insert the probe of an instant read thermometer. There is no need to add any liquid to the pan. 3 to 5 pounds sirloin tip roast, 2 teaspoons olive oil, 1 garlic clove
Roast the sirloin for 15 minutes, uncovered. Reduce the oven temperature to 325 degrees Fahrenheit. Continue roasting, uncovered, until the meat reaches 135 degrees Fahrenheit, about one hour to 70 minutes.
After removing the meat from the oven, tent it loosely with aluminum foil and let it rest for ten minutes before thinly slicing it.