Preheat oven to 425 degrees.
Place the roast, crown side down, in a roasting pan. Bake for 35 to 55 minutes according to he degree of doneness.
Meanwhile, combine the sage, Parmesan, bread crumb and garlic, salt and pepper in a bowl.
Remove the roast from the oven and pat the sage mixture on the outside of the roast.
Bake for 5 more minutes. Remove from oven. Cut the roast and serve immediately.