1Place beef, fat side up, on rack in shallow roasting pan. Sprinkle all sides and underneath beef generously with garlic powder, dried onion, salt and pepper. Let beef stand at room temperature at least 20 minutes before roasting.
2Heat oven to 450°F. Roast beef uncovered 15 minutes.
3Reduce oven temperature to 325°F; continue to roast 1 hour to 1 hour 30 minutes or until meat thermometer inserted into center of beef reads 135°F (for medium). Temperature will rise about 5°F to 10°F after removing from oven; keep this in mind when considering cooking time and desired level of doneness.
4Let beef stand 15 to 20 minutes before slicing.