Basque Green Sauce:

4 chopped garlic cloves 

 2 bay leaves 

 4 jalapeños (seeds removed if desired, and chopped) 

 1/2 teaspoon sea salt 

 2 tablespoons sherry vinegar 

 1/4 cup finely chopped fresh parsley leaves 

 2 tablespoons finely chopped fresh oregano leaves 

 2 tablespoons finely chopped fresh basil leaves 

 1/4 cup extra-virgin olive oil  

In a blender, place garlic, bay leaves, jalapeños, sea salt, and sherry vinegar. Blend until smooth. Transfer purée to a medium bowl. Add parsley, oregano, and basil, and stir to combine. Whisk in olive oil.

1 tablespoon finely grated orange zest
1 1/2 teaspoons chili powder
1 teaspoon sea salt
1 (1 1/2-pound) center-cut beef tenderloin, trimmed
1 tablespoon olive oil
24 thin slices of an 8-ounce French baguette (about 1/2-inch thick), toasted

Basque Green Sauce

Assortment of fresh herbs and greens, as desired (try arugula, basil, etc.)

In a small bowl, combine orange zest, chili powder, and salt. Rub tenderloin with spice mixture. Set aside for 30 minutes. Preheat oven to 450°.. In a large ovenproof skillet, heat oil over medium-high heat. Sear the beef on all sides until it is brown and caramelized, about 4 minutes per side (12–16 minutes total). Transfer skillet to oven and roast until an instant-read thermometer registers 125° for medium-rare (15–20 minutes). Transfer beef to a cutting board to rest for 20 minutes, then thinly slice. Top each baguette slice with sliced beef, about 1 teaspoon green sauce, and, if using, herbs.