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A close-up view of a white rectangular tray filled with numerous perfectly cooked Steak Crostini with Boursin Cheese appetizers, garnished with fresh chives.
Maryam

Elegant Steak Crostini with Garlic Herb Boursin

These delightful steak crostini feature perfectly seared steak slices, creamy garlic herb Boursin cheese, and a hint of fresh chives atop crispy baguette, creating an impressive appetizer for any occasion.
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Prep Time 20 minutes
Cook Time 15 minutes
Total Time 35 minutes
Servings: 12 pieces
Course: Appetizer
Cuisine: American, French-Inspired
Calories: 150
Ingredients Equipment Method Notes

Ingredients
  

For the Steak
  • 1 sirloin or flank steak 8-10 oz, 1 inch thick
  • 1 tbsp olive oil
  • 1/2 tsp kosher salt
  • 1/4 tsp black pepper
For the Crostini
  • 1 baguette day-old if possible
  • 2 tbsp olive oil
  • 1/2 tsp garlic powder
  • Pinch salt
For Assembly
  • 5.2 oz Boursin Garlic & Fine Herbs cheese
  • 2 tbsp fresh chives finely chopped

Equipment

  • Large Skillet or Cast Iron Pan
  • Baking Sheet
  • Small mixing bowl
  • Tongs
  • Sharp knife

Method
 

Prepare the Steak
  1. Pat the steak dry thoroughly with paper towels. Season generously on both sides with kosher salt and black pepper.
  2. Heat 1 tablespoon of olive oil in a large skillet or cast-iron pan over medium-high heat until shimmering and almost smoking.
  3. Carefully place the seasoned steak in the hot skillet. Sear for 3-4 minutes per side for medium-rare (internal temperature 130-135°F), adjusting time for desired doneness.
  4. Remove the steak from the skillet and transfer it to a cutting board. Tent loosely with foil and let it rest for at least 5-10 minutes. Resting is crucial for juicy steak.
Prepare the Crostini
  1. While the steak rests, preheat your oven to 375°F (190°C).
  2. Slice the baguette into 1/2-inch thick rounds. Arrange them in a single layer on a baking sheet.
  3. In a small bowl, whisk together 2 tablespoons of olive oil, garlic powder, and a pinch of salt. Lightly brush this mixture over one side of each baguette slice.
  4. Bake for 8-10 minutes, or until the crostini are golden brown and crispy. Let cool slightly.
Assemble the Crostini
  1. Thinly slice the rested steak against the grain into bite-sized pieces or strips.
  2. Spread a generous amount of Boursin Garlic & Fine Herbs cheese onto each toasted crostini.
  3. Top each crostini with a slice or two of the seared steak.
  4. Garnish with freshly chopped chives before serving.

Notes

For best results, use a quality cut of steak like sirloin or flank. Resting the steak is essential for juiciness. Crostini can be made ahead of time and stored in an airtight container for up to 2 days; assemble just before serving.