To prepare the beef for cooking, take it out of the fridge and sprinkle sea salt and black pepper on all sides. Let it rest on the counter for an hour to allow the moisture to be drawn out and evenly distributed. Grill or pan sear until the internal temperature reaches 125°F to 135°F. Baste with the Worcestershire sauce while the beef cooks forming a crust. Remember that the beef will continue to cook once removed from the heat. Wrap it in foil and let it rest for 20 minutes. Your beef is now ready to eat or can be refrigerated, wrapped, for up to three days.
6 ounces ribeye steak, 2 teaspoons sea salt, 1 teaspoon black pepper, 1 tablespoon Worcestershire sauce
To prepare the baguette slices, preheat your oven to 400°F and line a large baking sheet with parchment paper. Next, use a serrated knife to slice the baguette into 1/2-inch rounds. The number of rounds will depend on the length of the baguette. For a 24-inch-long baguette, you should get around 48 rounds. After slicing, place the rounds onto the prepared baking sheet and lightly spray or brush them with olive oil. Flip the rounds and coat the second side with olive oil as well. Bake the slices for 3 to 5 minutes per side or until they turn lightly golden brown. Once done, remove the baking sheet from the oven and let the baguette slices cool atop the sheet.
1 24-inch baguette, 2 tablespoons olive oil
To prepare the beef for the dish, slice it thinly using a meat knife or mandoline. If you prefer it less rare, heat a non-stick skillet on medium heat and cook the slices in a little olive oil until the color changes from hot pink to light pink.
Place thin slices of beef on the baguette rounds, and top each with a teaspoon of horseradish cream. If you find that you need more sauce after all the rounds are assembled, add an extra half to a full teaspoon and let it flow down the sides if desired.
1/2 cup Horseradish cream
Top each tartine with well-drained strips of roasted red peppers. Roasting the peppers yourself can enhance their flavor. Then, sprinkle capers over the tartines. If you're not a fan of capers, you can use chopped green olives or minced cornichons as an alternative.
1/2 cup roasted red pepper strips, 2 tablespoons capers
Arrange on platters or serving trays. Tartines are best enjoyed served at room temperature.