Steak Crostini Appetizer

Name: Steak Crostini Appetizer
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Yield: 5
Cuisine: American
Ingredients: 1 loaf Baguette (Sliced into ½ inch thick rounds (ask deli to slice if possible)); 2 tablespoons Olive Oil (For brushing crostini); 1 clove Garlic Clove (Peeled and halved, for rubbing crostini); 1 package Boursin Cheese (Garlic and Fine Herbs flavor (approx. 5.2 oz / 150g)); 1 large Onions (Caramelized (can be prepped up to 4 days in advance)); 8 ounces Steak (Tenderloin or Filet Mignon cut, cooked to medium-rare); to taste Salt (For seasoning steak); to taste Black Pepper (For seasoning steak); 2 tablespoons Chives (Fresh, chopped (optional, for garnish))

This Steak Crostini recipe is a highly favored appetizer, known for being a crowd-pleaser, simple to prepare, and can be prepped ahead of time. It features toasted baguette slices brushed with olive oil and garlic, spread with creamy Boursin cheese, topped with tender sliced steak, sweet caramelized onions, and an optional sprinkle of fresh chives. Perfect for holidays or any gathering.

#Steak

#Crostini

#Appetizer

#Holiday Recipe

#Holiday Food

#Party Food

#Easy Appetizer

Beautifully arranged Steak Crostini

Recipe Information

10m

Prep Time

15m

Cook Time

25m

Total Time

Servings

Easy

American

English

Nutrition (per serving)

350

Calories

22g

Protein

25g

Carbs

18g

Fat

Close-up of a perfectly topped crostini

Ingredients

Baguette
(Sliced into ½ inch thick rounds (ask deli to slice if possible))
1 loaf
Olive Oil
(For brushing crostini)
2 tablespoons
Garlic Clove
(Peeled and halved, for rubbing crostini)
1 clove
Boursin Cheese
(Garlic and Fine Herbs flavor (approx. 5.2 oz / 150g))
1 package
Onions
(Caramelized (can be prepped up to 4 days in advance))
1 large
Steak
(Tenderloin or Filet Mignon cut, cooked to medium-rare)
8 ounces
Salt
(For seasoning steak)
to taste
Black Pepper
(For seasoning steak)
to taste
Chives
(Fresh, chopped (optional, for garnish))
2 tablespoons

Servings: 5

💡 Tip: Check off ingredients as you add them to keep track of your progress!

Crostini platter ready for serving

Instructions

0/8 completed

1
Preheat your oven to 375°F (190°C). Slice the baguette into ½ inch thick rounds. If your deli sliced the bread for you, arrange the slices on a baking sheet.
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2m
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Preheat your oven to 375°F (190°C). Slice the baguette into ½ inch thick rounds. If your deli sliced the bread for you, arrange the slices on a baking sheet.
2m
Ensure slices are uniform for even toasting.
2
Brush one side of each baguette slice with olive oil. Lightly rub the oiled side of each slice with the cut side of a garlic clove for a subtle garlic flavor. Toast in the preheated oven for 5-7 minutes, or until golden brown and crisp. Let cool slightly.
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7m
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Brush one side of each baguette slice with olive oil. Lightly rub the oiled side of each slice with the cut side of a garlic clove for a subtle garlic flavor. Toast in the preheated oven for 5-7 minutes, or until golden brown and crisp. Let cool slightly.
7m
Watch carefully to prevent burning; ovens vary. The crostini should be crisp but not too hard.
3
Season the steak (tenderloin or filet mignon) generously with salt and pepper. Cook the steak in a hot skillet or grill to your desired doneness (medium-rare is recommended for tenderness). Let the steak rest for 5 minutes before thinly slicing it against the grain.
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15m
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Season the steak (tenderloin or filet mignon) generously with salt and pepper. Cook the steak in a hot skillet or grill to your desired doneness (medium-rare is recommended for tenderness). Let the steak rest for 5 minutes before thinly slicing it against the grain.
15m
Resting the steak is crucial for juicy results. Slice thinly for easy eating on the crostini.
4
Once the crostini have cooled, spread a generous amount of Boursin cheese (Garlic and Fine Herbs) on the toasted side of each crostini.
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2m
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Once the crostini have cooled, spread a generous amount of Boursin cheese (Garlic and Fine Herbs) on the toasted side of each crostini.
2m
Allowing the crostini to cool slightly prevents the cheese from melting too much and becoming messy.
5
Place a thin slice of the cooked and rested steak on top of the Boursin cheese on each crostini.
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1m
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Place a thin slice of the cooked and rested steak on top of the Boursin cheese on each crostini.
1m
Fold the steak slice slightly if it's too long for the crostini.
6
Add a small dollop of caramelized onions on top of the steak.
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1m
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Add a small dollop of caramelized onions on top of the steak.
1m
Ensure the caramelized onions are at room temperature for best flavor and texture.
7
(Optional) Garnish each steak crostini with a sprinkle of fresh chopped chives.
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1m
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(Optional) Garnish each steak crostini with a sprinkle of fresh chopped chives.
1m
Chives add a fresh, mild oniony bite and a pop of color.
8
Arrange the finished steak crostini on a platter and serve immediately, or within an hour for best freshness.
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0m
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Arrange the finished steak crostini on a platter and serve immediately, or within an hour for best freshness.
0m
For make-ahead, prepare all components separately and assemble just before serving to prevent crostini from getting soggy.