Peppered Beef Tenderloin with Mustard Horseradish Sauce

Beef tenderloin is the holiday-table star for a reason. It’s tender enough to cut with a butter knife, mild enough to pair with almost any side, and dramatic enough to feel like a proper occasion. This version dresses it up with a peppery, herby crust: a thick paste of Dijon mustard, butter, and a full cup of chopped Italian parsley, rolled in coarsely cracked peppercorns.

The mustard-butter paste does two important things. It seasons the meat deeply as it roasts, and it acts as glue to hold the peppercorn crust in place.

A 40-minute roast at a moderate temperature gets the center to a pink medium-rare while the crust turns dark and peppery. The 10-minute rest is not optional. Skip it and the juices pour out on the cutting board instead of staying in the meat.

Serve with the horseradish-Dijon cream sauce on the side. The cool tang cuts through the richness and sets off the peppery crust.

Chef Tips

• Bring the tenderloin to room temperature for 30 to 45 minutes before roasting. Cold-from-fridge meat cooks unevenly.
• Crack the peppercorns coarsely, not fine. Coarse pepper forms the proper crust; fine pepper turns harsh.
• Use a meat thermometer: 125°F (52°C) for medium-rare after the rest, pulling at 120°F (49°C) from the oven.
• Slice against the grain in thin medallions for the most tender bite.

Variations

• Mix pink, green, and black peppercorns in the crust for color and more nuanced heat.
• Add minced garlic or fresh thyme to the mustard-butter paste for another flavor layer.
• Swap the horseradish cream for a classic bearnaise or red wine pan sauce.