Steps:
- Put oven rack in middle position and preheat oven to 425°F.
- Remove any strings from beef if tied, then pat beef dry and sprinkle with kosher salt and pepper. Heat oil in a deep 12-inch heavy skillet over high heat until just smoking, then sear beef 1 piece at a time, turning with tongs, until well browned, about 5 minutes each. (If beef tenderloin pieces are too long to fit into skillet, halve each crosswise, then brown 2 pieces at a time.) Transfer beef to an 18- by 12-inch flameproof roasting pan, reserving skillet.
- Roast beef in oven until thermometer inserted diagonally 2 inches into center of each piece registers 120°F, 20 to 25 minutes. Transfer beef to a cutting board, reserving roasting pan, and let stand, loosely covered with foil, 25 minutes. (Beef will continue to cook as it stands, reaching 130°F for medium-rare.)
- While beef roasts, heat butter in skillet over moderately high heat until foam subsides, then reduce heat to moderate and cook mushrooms, stirring, until liquid they give off is evaporated and mushrooms are pale golden, 8 to 10 minutes. Remove from heat.
- While beef stands, straddle roasting pan across 2 burners, then add Sherry and deglaze pan by boiling over high heat, stirring and scraping up brown bits, 1 minute. Add Sherry mixture and espagnole sauce to mushrooms and cook over moderate heat, stirring, until warm. Cover skillet and remove from heat.
- Cut off and discard strings from beef and cut meat crosswise into 10 or 20 slices. Pour any juices on cutting board into sauce and heat over moderate heat, stirring, until hot.
- Serve beef with sauce.
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Arbin Ramesh
[email protected]This recipe was easy to follow and the results were amazing! The beef was tender and flavorful, and the sauce was rich and delicious. I will definitely be making this again.
Puran Bantha Magar
[email protected]This was a great recipe! The beef was cooked perfectly and the sauce was delicious. I would definitely recommend this recipe to anyone looking for a special occasion meal.
Saeed Dashti
[email protected]This recipe was easy to follow and the results were fantastic. The beef was tender and juicy, and the sauce was rich and flavorful. I will definitely be making this again.
Bradley Joshua
[email protected]I made this dish last night and it was a hit! My family loved it. The beef was cooked perfectly and the sauce was delicious. I will definitely be making this again.
Howard Holley
[email protected]This was an amazing dish! The beef was so tender and flavorful, and the mushrooms and espagnole sauce were the perfect accompaniment. I would definitely recommend this recipe to anyone looking for a special occasion meal.