1Heat oven to 325°. Place beef in shallow roasting pan. Brush with oil; sprinkle evenly with dressing mix (dry). Insert meat thermometer so tip is in thickest part of beef.
2Bake uncovered 1 1/2 to 2 hours or until thermometer reads 140°. Cover beef with aluminum foil and let stand about 15 minutes or until thermometer reads 145°. (Temperature will continue to rise about 5°, and beef will be easier to carve.)
3Serve beef with pan drippings.