OK...it is a little involved but not too complicated just time-consuming.
Ingredients
1 whole beef tenderloin, cleaned and scraped - 6 to 8 pounds
Salt and freshly ground black pepper
1/4 cup of Olive oil
2 cups panko bread crumbs
8 tablespoons unsalted butter, melted, and fat solids removed. It will give you about 4 tablespoons of clarified butter
3 1/2 tablespoons Dijon mustard
1/4 cup minced shallots
1/2 cup dry white wine
1 1/2 cups of reduced beef stock (it should have body and be a little thick)
1/2 lemon
2 tablespoons parsley, minced
Method
- At least 24 hours before you want to cook it, place the beef tenderloin on a wire rack and salt it using Kosher salt. Let it sit in the fridge uncovered overnight. If you plan to leave it in the fridge for longer, cover it loosely with plastic wrap. You want it dry so the tenderloin caramelizes when it roasts.
- Heat the oven to 375 F.
- If the tenderloin is too big for your pan, cut it in half, or thirds. I like to truss the tenderloin so it holds a nice round shape. It also helps it cook more evenly. Do not skip the trussing
- Heat a heavy-bottomed pan over high heat. I like to use a big cast pan for this but any HEAVY bottom pan will do. Pepper the tenderloin with freshly ground pepper. Add the oil to the pan, just enough to give a good coating. Sear the meat quickly but make sure it is browned. Remove it from the heat.
- Combine the panko bread crumbs with half the melted butter, season it with salt and black pepper and half the parsley, and combine it all with a few stirs of a spoon.
- Once the tenderloin has cooled from the searing step, use three tablespoons of the mustard and smear it across three sides of the tenderloin, then take the tenderloin and roll the three sides into the breadcrumbs, creating a nice thick crust.
- In a saucepan, add the remaining butter. Place the pan over medium-high heat and sweat the shallots. Do not brown them. Once the shallots are tender, add the wine and let it reduce to 1 tablespoon or so.
- Add the stock and the mustard and reduce the volume by half. The sauce should coat the back of a spoon nicely. If it's too thick add a splash of water.
- Place the tenderloin, uncrusted side down, on a baking sheet with sides.
- Bake the tenderloin until the center reaches 120 degrees F for rare or 130 degrees F for medium rare. The temperature will be higher as you move away from the center so guests who like it cooked more can get their preference.
- Remove it from the oven and let it rest for 10 minutes.
- Add the parsley to the sauce and warm it, add a splash of lemon juice. Either ladle the sauce onto the bottom of a warm serving platter or put it in a gravy boat to serve on the side. Fan out the tenderloin on the platter.
- Serve immediately.
If you want to add the bone marrow part then BEFORE you start with step two above, preheat oven to 450 degrees. Put beef marrow bones, cut side up, on a foil-lined baking sheet or in an ovenproof skillet. Cook until the marrow is soft and has begun to separate from the bone
about 15 minutes. (Stop before marrow begins to drizzle out). Let the oven cool and then proceed with step two. Scrape the marrow into the pan at step 8 and whisk to incorporate.
Enjoy!