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Filet Mignon with Blender Béarnaise Sauce

D'Artagnan | Yield: Serves 4
Silky béarnaise pairs perfectly with filet mignon and our fool-proof blender method makes the sauce quick and easy.
New Wagyu Tenderloin Steaks with Béarnaise Sauce Recipe | D’Artagnan

Ingredients

  • 4 Wagyu Filet Mignon Steaks
  • ¼ cup white wine vinegar
  • ¼ cup dry white wine
  • 4 sprigs fresh tarragon
  • 1 medium shallot, finely chopped
  • Kosher salt & freshly ground black pepper
  • Neutral high smoke point oil, we used avocado oil
  • 3 eggs yolks
  • 8 tablespoons (1 stick) unsalted butter, cut into chunks

Preparation

  1. Remove steaks from the fridge about 30 minutes before cooking. Preheat oven to 400 degrees F.
  2. In a small saucepan over medium-high heat, stir together vinegar, wine, shallots, and 2 whole sprigs of tarragon. Bring mixture to a simmer and cook, stirring occasionally, until liquid is syrupy and reduced by ¾. Remove tarragon; discard. Set mixture aside to cool.
  3. Heat a large cast-iron pan over high heat until smoking hot. Season both sides of each steak with salt and pepper. Add about 2 tablespoons of oil to the pan, swirling to coat. Sear steaks until nicely browned, about 2 minutes each side, turning only once. Place pan in the oven and cook until an instant-read thermometer inserted into the center of a steak registers 125 degrees F for medium-rare, about 5-6 minutes. Remove the steaks to a cutting board and rest for 5 minutes.
  4. While the steaks are resting, finish the béarnaise: Finely chop the remaining tarragon (leaves only) and set aside. Melt butter in a small saucepan over medium heat. Add cooled wine reduction, egg yolks, and ½ teaspoon salt to the jar of a high speed blender; blend for about 20 seconds. With the blender running on medium-high speed, slowly add about half of the melted butter in a steady stream and blend until mixture is emulsified. Raise speed to high and slowly drizzle in the rest of the butter. Pour sauce into a warm serving bowl, stir in chopped tarragon. Taste for seasoning and add salt and/or pepper if desired.
  5. Serve steaks immediately with warm béarnaise.