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Perfect Steakhouse-Style Sliced Beef Tenderloin Crostini

steakhouse-style sliced beef tenderloin crostini - featured image
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An easy and elegant appetizer featuring thinly sliced beef tenderloin on toasted baguette rounds with creamy horseradish sauce and fresh herbs. Ready in under 30 minutes, perfect for entertaining or casual treats.

Ingredients

Scale
  • 8 ounces beef tenderloin, trimmed and sliced thinly against the grain
  • 1 fresh baguette, sliced into ½-inch rounds
  • Extra virgin olive oil, for brushing
  • ¼ cup prepared horseradish
  • ½ cup sour cream or Greek yogurt (dairy-free yogurt optional)
  • 1 tablespoon finely chopped chives
  • 1 tablespoon finely chopped parsley
  • 1 clove garlic, minced
  • 1 teaspoon freshly squeezed lemon juice
  • Salt and freshly cracked black pepper, to taste

Instructions

  1. Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper or foil.
  2. Slice the baguette into ½-inch rounds. Mix olive oil with minced garlic in a small bowl.
  3. Brush each baguette slice lightly on both sides with the garlic olive oil. Arrange on the baking sheet.
  4. Toast the baguette slices for 8–10 minutes, flipping halfway, until golden and crisp but still slightly tender inside.
  5. In a bowl, combine prepared horseradish with sour cream or Greek yogurt. Stir in lemon juice, chopped chives, and parsley. Season with salt and pepper. Refrigerate until ready to use.
  6. Using a sharp knife, slice the beef tenderloin very thinly against the grain, about ⅛ inch thick. Chill in the freezer for 10-15 minutes beforehand if needed for easier slicing.
  7. Heat a cast-iron skillet over medium-high heat. Add a small amount of oil and sear the beef slices quickly, about 30 seconds per side, until browned but still rare to medium-rare inside. Work in batches if necessary. Remove and let rest briefly.
  8. Spread a generous dollop of horseradish sauce on each toasted baguette slice. Top with one or two slices of seared beef tenderloin.
  9. Garnish with extra fresh herbs or cracked black pepper if desired.
  10. Serve immediately for best texture and flavor.

Notes

Use a sharp knife and partially freeze the beef for easier thin slicing. Watch the crostini closely while toasting to avoid burning. Prepare horseradish sauce ahead to deepen flavor. For gluten-free, use gluten-free baguette or crackers. For dairy-free, substitute sour cream with coconut yogurt.

Nutrition

Keywords: beef tenderloin crostini, steakhouse appetizer, horseradish sauce, easy appetizer, party food, sliced beef crostini

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