1. Preheat oven to 450°.
2. Heat a large skillet over medium-high heat. Rub beef with oil; coat on all sides with pepper and 3/4 teaspoon salt. Add beef to pan; cook 3 minutes, browning on all sides.
3. Place beef on a broiler pan. Bake at 450° for 25 minutes or until a thermometer registers 125°. Remove from oven; let stand for 10 minutes before slicing.
4. Combine sour cream and remaining ingredients; serve with beef.