Slow Roasted Beef Tenderloin Recipes

SLOW-ROASTED FILET OF BEEF AND BASIL PARMESAN MAYONNAISE

Steps:

• Preheat the oven to 275 degrees. Use an oven thermometer to be sure your oven temperature is accurate.
• Place the filet on a sheet pan and pat it dry (all over) with paper towels. Brush the filet all over with the oil, reserving about half a tablespoon. Sprinkle it all over with the salt and pepper (it will seem like a lot but believe me, it makes a difference). Place the tarragon branches around the beef, tying them in 4 or 5 places with kitchen twine to keep them in place, and then brush the tarragon with the reserved oil.
• Roast the filet of beef for 1 1/4 to 1 1/2 hours, until the temperature registers 125 degrees in the center for rare and 135 degrees for medium-rare. Cover the filet with aluminum foil and allow to rest for 20 minutes. Slice thickly and serve warm or at room temperature with Basil Parmesan Mayonnaise.
• Place the egg yolks, lemon juice, Parmesan, mustard, basil, garlic, 1 tablespoon salt, and 1 teaspoon pepper in a food processor fitted with the steel blade. Process for 20 seconds, until smooth. Combine the vegetable oil and olive oil in a 2-cup liquid measuring cup. With the processor running, slowly pour the oil mixture through the feed tube to make a thick emulsion. Taste for seasonings -- the mayonnaise is a sauce so it should be highly seasoned. Store in the refrigerator until ready to use; it will keep for up to a week.

ROAST BEEF TENDERLOIN

Steps:

• Combine porcini mushrooms and water in a bowl; soak until soft, 1 hour. Drain and reserve liquid. Dice and set mushrooms and reserved liquid aside.
• Preheat oven to 325 degrees F (165 degrees C).
• Season beef generously with salt and pepper. Heat vegetable oil in a large ovenproof skillet over high heat. Place beef in the skillet; cook until brown on all sides, 5 to 8 minutes per side.
• Reduce heat to medium and stir in 1 tablespoon butter, shallots, and a pinch of salt; cook until shallots are soft and translucent, 5 to 7 minutes.
• Pour tarragon vinegar into the skillet and bring to a boil while scraping any browned bits off of the bottom. Stir until liquid is reduced by half, 2 to 4 minutes.
• Pour in veal stock, cream, 1/2 cup reserved mushroom liquid, mushrooms, salt, and pepper; stir to combine. Return beef to the skillet.
• Roast in the preheated oven until meat is medium rare, about 45 minutes. An instant-read thermometer inserted into the center should read 130 degrees F (54 degrees C). Transfer meat to a plate and loosely tent with foil. Set skillet over high heat and bring pan juices to a boil.
• Stir in 1 tablespoon butter and tarragon; season with salt and pepper to taste. Return tenderloin and any accumulated juices to skillet and serve.

SLOW-ROASTED BEEF

Steps:

• Pat roast dry with paper towels. Rub generously with salt (at least 1/4 cup) and pepper on all sides. Shake the roast gently, allowing any excess salt and pepper to fall off.
• Place a wire rack in a small rimmed baking sheet or lay 5 to 6 metal skewers across a large plate or baking sheet. Place roast on top of rack or skewers, making sure it is fully elevated above the bottom of the baking sheet. Place elevated roast on the bottom rack of your refrigerator, uncovered (or loosely covered with foil, if you are squeamish about raw meat), and let rest undisturbed for at least 24 hours and up to 48 hours.
• Transfer baking sheet with elevated roast directly from the refrigerator into a cold oven and set oven temperature to 225 degrees. Cook until the center of the roast reaches 120 degrees for rare, or 130 degrees for medium, as tested with a digital thermometer. Depending on the oven and the exact geometry of the roast, this will take 1 to 2 1/2 hours.
• Remove baking sheet with roast from oven and set on a trivet or on top of your stovetop. Let the roast rest on the baking sheet for at least 30 minutes.
• Heat vegetable oil in a large skillet (any heavy skillet without a nonstick coating will do) over high until lightly smoking. Sear roast, turning occasionally, until well browned on all sides, about 4 minutes total.
• Carve into thin slices with a sharp knife and serve what you'll eat today. When finished, carve remaining roast. Carefully lay fanned slices into zipper-lock freezer bags in layers no thicker than 1/2 inch. Squeeze out as much air as possible and stack sealed bags on an aluminum baking sheet. Place in freezer until completely frozen. Store frozen for up to 2 months.
• To thaw, place one bag of frozen sliced steak on an aluminum baking sheet at room temperature until defrosted, about 45 minutes. It is important to use an aluminum sheet, as the high thermal conductivity of aluminum greatly speeds up the thawing process. Use thawed sliced steak as desired.