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Beef Tenderloin Crostini with Béarnaise Sauce

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Beef Tenderloin Crostini with Béarnaise Sauce is a sophisticated appetizer featuring tender slices of roasted beef on crispy crostini, topped with a rich, buttery Béarnaise sauce. It’s an elegant yet approachable bite-sized dish perfect for entertaining.

  • Author: Julia
  • Prep Time: 20 minutes
  • Cook Time: 35 minutes
  • Total Time: 55 minutes
  • Yield: 20 crostini
  • Category: Appetizer
  • Method: Roasting
  • Cuisine: French-Inspired
  • Diet: Halal

Ingredients

  • 1 baguette, sliced
  • 2 tablespoons olive oil (for brushing)
  • Salt and black pepper, to taste

For the beef tenderloin:

  • 1 lb beef tenderloin, trimmed
  • 1 tablespoon olive oil
  • Salt and black pepper, to taste
  • 1/2 teaspoon garlic powder (optional)
  • 1 teaspoon fresh rosemary or thyme, chopped (optional)

For the Béarnaise sauce:

  • 2 tablespoons shallots, finely minced
  • 1/4 cup white wine vinegar
  • 1/4 cup dry white wine
  • 1 tablespoon fresh tarragon, chopped (divided)
  • 3 egg yolks
  • 1/2 cup unsalted butter, melted
  • 1 teaspoon lemon juice
  • Salt and pepper, to taste

Instructions

  1. Preheat oven to 400°F (200°C). Slice the baguette, brush with olive oil, season with salt and pepper, and bake for 8–10 minutes until golden and crisp. Set aside.
  2. Preheat oven to 425°F (220°C). Rub tenderloin with olive oil, salt, pepper, and optional seasonings. Sear in a hot skillet on all sides, then transfer to the oven and roast for 20–25 minutes (for medium-rare). Let rest before slicing thinly.
  3. In a small saucepan, combine shallots, vinegar, wine, and half the tarragon. Simmer until reduced by half. Strain into a heatproof bowl.
  4. Whisk in egg yolks over a double boiler until thickened slightly. Slowly drizzle in melted butter while whisking constantly. Stir in lemon juice, remaining tarragon, salt, and pepper. Keep warm.
  5. To assemble, top each crostini with a thin slice of beef and a spoonful of Béarnaise sauce. Garnish with herbs if desired. Serve immediately.

Notes

  • Add horseradish cream or Dijon to the crostini for extra flavor.
  • Use a blender to simplify the Béarnaise sauce method.
  • Grill the beef for a smoky twist.
  • Top with microgreens or pomegranate seeds for a festive look.
  • Prepare components ahead and assemble just before serving.

Nutrition

Find it online: https://juliameals.com/beef-tenderloin-crostini-with-bearnaise-sauce/