This is just about the best way in the world to cook a beef roast. I’ve done this with little roasts all the way up to one that resembled the leg of a brontosaurus and it is totally foolproof.
First, take the roast out of the refrigerator and let it sit at room temperature for an hour. Preheat the oven to 375 degrees.
Place the roast in a pan, fat side up. Oil the top and sides. Make slits in the roast and place a piece of garlic in each slit. Season with salt and pepper. Place the meat in the oven and set the timer for 1 hour. Don’t open the door at any time. When the timer rings, turn the oven off and again, do NOT open the door.
Decide your serving time and 45 minutes before serving, turn the oven back on at 375 degrees. Cook for 25-30 minutes and then turn the oven off. Remove roast and let it sit wrapped in foil for 15 minutes.