Why You’ll Love This Recipe
This steak crostini offers the perfect balance of flavors: savory steak, creamy horseradish sauce with a hint of tang, and the rich sweetness of caramelized shallots. The crispy baguette serves as a perfect base to hold all these delicious toppings, making it an ideal bite-sized snack or appetizer. It’s quick to prepare but looks and tastes like a gourmet dish. Whether for a dinner party or a casual gathering, this recipe will surely impress.
Ingredients
For the Steak:
- 1 pound sirloin, tenderloin steak, or filet mignon
- Salt and black pepper, to taste
- 2 tablespoons unsalted butter
- 1 teaspoon garlic powder
- 1 teaspoon dried thyme
For the Crostini:
- Baguette, thinly sliced
- Olive oil for brushing
For the Creamy Horseradish Sauce:
- 1/2 cup mayonnaise
- 2 tablespoons prepared horseradish
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- Salt and black pepper, to taste
For the Caramelized Shallots:
- 2 tablespoons unsalted butter
- 2 large shallots, thinly sliced
- 1 tablespoon balsamic vinegar
- 1 tablespoon brown sugar
- Salt and black pepper, to taste
(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)
Directions
- Season the steak with salt, black pepper, garlic powder, and dried thyme. Let the steak rest for at least 30 minutes to absorb the seasoning.
- Prepare the creamy horseradish sauce by mixing mayonnaise, horseradish, Dijon mustard, and lemon juice. Season with salt and pepper, then refrigerate.
- In a skillet, melt butter over medium heat. Add thinly sliced shallots and cook, stirring occasionally until softened.
- Add balsamic vinegar, brown sugar, salt, and pepper. Cook until the shallots are caramelized and golden brown (approximately 30 minutes). Remove from heat.
- Heat olive oil in another skillet over medium-high heat and cook the steak to your desired doneness (about 4 minutes per side for medium-rare).
- Preheat the oven to 375°F (190°C). Brush the baguette slices with olive oil and toast them on a baking sheet for 5-7 minutes or until golden.
- Slice the steak into thin strips.
- Spread the creamy horseradish sauce on each toasted baguette slice, top with a slice of steak, and add a spoonful of caramelized shallots.
- Garnish with fresh thyme or parsley if desired. Serve immediately.
Servings and Timing
- Servings: 4-6
- Total time: 1 hour (includes resting and cooking times)
Variations
- Add cheese: For a richer taste, top the crostini with a sprinkle of melted cheese, such as goat cheese or Parmesan, before serving.
- Spicy kick: Add a few dashes of hot sauce or sprinkle red pepper flakes over the creamy horseradish sauce to add some heat.
- Vegetarian option: Replace the steak with roasted mushrooms for a vegetarian-friendly alternative.
Storage/Reheating
- Storage: Store the assembled crostini in an airtight container in the fridge for up to 2 days. The ingredients can be kept separately and assembled just before serving.
- Reheating: Reheat the crostini by toasting the bread slices again and topping with freshly cooked steak, sauce, and onions.
FAQs
How can I make this recipe ahead of time?
You can prepare the caramelized onions and creamy horseradish sauce in advance. Assemble the crostini just before serving to ensure the bread stays crispy.
What type of steak is best for this recipe?
Filet mignon, sirloin, or tenderloin are ideal choices for tender and flavorful results.
Can I use a different type of bread for the crostini?
Yes, you can use other types of bread, like sourdough or ciabatta, but baguette works best for a crispy texture.
How do I know when the steak is done cooking?
The steak’s doneness can be checked with a meat thermometer. For medium-rare, it should read around 130°F (54°C).
Can I use store-bought horseradish sauce?
While homemade horseradish sauce adds a fresh kick, you can substitute it with store-bought versions if you’re in a pinch.
Can I make this recipe gluten-free?
Yes, simply use gluten-free baguette slices to make this recipe suitable for gluten-free diets.
How do I avoid overcooking the steak?
Rest the steak after cooking and slice it thinly. This prevents it from overcooking and ensures it remains juicy.
What other toppings can I add to the crostini?
Consider adding arugula, microgreens, or a drizzle of balsamic glaze for extra flavor.
How long can I keep the leftovers?
Leftovers can be stored for up to 2 days, but the bread may lose its crispiness.
Can I use onions instead of shallots?
Yes, you can substitute onions for shallots, but shallots provide a milder, sweeter flavor when caramelized.
Conclusion
Steak crostini with creamy horseradish sauce and caramelized onions makes for a perfect appetizer to serve at any occasion. With rich, savory flavors and a delightful texture contrast, this dish will surely be a hit. Easy to prepare and full of flavor, it’s an appetizer that delivers on both presentation and taste.
