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Perfect Beef Tenderloin Crostini Recipe with Truffle Aioli and Arugula

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A quick and elegant appetizer featuring tender beef tenderloin on toasted baguette slices, topped with peppery arugula and creamy homemade truffle aioli. Perfect for entertaining or casual gatherings.

Ingredients

Scale
  • 8 ounces beef tenderloin, trimmed and thinly sliced
  • 1 small baguette, sliced into 1/2-inch rounds
  • 1 cup fresh arugula leaves, washed and dried
  • 1/2 cup mayonnaise
  • 1 teaspoon black truffle oil
  • 1 garlic clove, finely minced
  • 1 tablespoon fresh lemon juice
  • Salt and freshly cracked black pepper to taste
  • 2 tablespoons olive oil, for brushing baguette slices

Instructions

  1. Prepare the Truffle Aioli: In a small mixing bowl, combine mayonnaise, truffle oil, minced garlic, and fresh lemon juice. Whisk until smooth. Season with salt and pepper to taste. Refrigerate to let flavors meld.
  2. Slice and Toast the Baguette: Preheat oven to 375°F. Slice baguette into 1/2-inch rounds. Brush each slice lightly with olive oil on both sides and arrange on a baking sheet. Toast for 8-10 minutes, flipping halfway, until golden and crisp. Let cool slightly.
  3. Prepare the Beef Tenderloin: If raw, season thin slices with salt and pepper. Heat a skillet over medium-high heat with a dash of olive oil. Quickly sear beef slices 1-2 minutes per side for medium-rare. Remove and let rest. If pre-cooked, slice thinly and season lightly.
  4. Assemble the Crostini: Spread a generous layer of truffle aioli on each toasted baguette slice. Top with a slice of beef tenderloin and a small handful of fresh arugula. Sprinkle with cracked black pepper.
  5. Optional Final Touches: Drizzle a little more truffle oil or a squeeze of lemon juice over the crostini before serving.

Notes

If aioli is too thick, stir in a teaspoon of water or lemon juice to loosen. Use a serrated knife for clean slicing. Let seared beef rest to retain juices. Toast bread to a light golden crisp for best texture. Store components separately if making ahead to keep bread crisp.

Nutrition

Keywords: beef tenderloin crostini, truffle aioli, arugula appetizer, easy appetizer, party food, quick crostini recipe

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