Roast Beef with Scallion-Caper Green Sauce

Directions

1. 1.

   Put oven rack in middle position and preheat oven to 500°F.

2. 2.

   Pat roast dry and sprinkle all over with 2 teaspoons salt and 1/2 teaspoon black pepper.

3. 3.

   Roast, fat side up, in a roasting pan 15 minutes. Reduce oven temperature to 325°F and continue to roast until thermometer inserted into center of meat registers 120°F, 35 to 45 minutes more. Transfer roast to a cutting board and let stand, uncovered, 15 minutes.

4. 4.

   While roast stands, stir together remaining ingredients, a slightly rounded 1/4 teaspoon black pepper, and a pinch of salt.

5. 5.

   Thinly slice meat across the grain and serve with sauce.