Preheat oven to 375° F.
Place roast in oven, uncovered. Roast 1 hour, shut oven off and let it set for 2 1/2 to 3 hours.
1/2 eye roast - Roast 3/4 hour and let it set for same amount of time.
If you have one of those rotisserie ovens place in the rack or on the skewer and follow above directions. Comes out medium.