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Grilled Beef Tenderloin Crostini with Béarnaise Sauce

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Absolutely! Here’s a detailed, comprehensive 3000-word article for the recipe **Grilled Beef Tenderloin Crostini with Béarnaise Sauce** — covering everything from the ingredients, step-by-step instructions, culinary tips, variations, history, pairing suggestions, and more.

# Grilled Beef Tenderloin Crostini with Béarnaise Sauce: A Gourmet Appetizer to Impress

## Introduction

When it comes to sophisticated appetizers that marry elegance with mouthwatering flavors, **Grilled Beef Tenderloin Crostini with Béarnaise Sauce** stands out as a true showstopper. This dish perfectly balances the tender, juicy richness of premium beef tenderloin with the crisp crunch of toasted bread and the creamy, aromatic decadence of classic French Béarnaise sauce.

Ideal for dinner parties, special occasions, or simply treating yourself to a gourmet bite, these crostini elevate the humble appetizer to a new level of culinary delight. In this article, we’ll explore the history of crostini and Béarnaise sauce, the key ingredients and tools, detailed recipe steps, tips for perfect grilling and sauce-making, suggested pairings, and creative twists to personalize this dish.

## The Essence of the Dish: What Are Crostini?

Crostini, literally “little toasts” in Italian, are small slices of toasted or grilled bread often topped with a variety of savory or sweet ingredients. Originating from Tuscany, crostini have been a staple of Italian antipasto (appetizer) culture for centuries, prized for their simplicity and versatility. The beauty of crostini lies in the perfect contrast of textures — crisp bread coupled with flavorful toppings — and the ability to customize them to suit any taste.

In this recipe, the crostini are enhanced with **grilled beef tenderloin**—one of the most tender and luxurious cuts of beef—and a silky Béarnaise sauce, creating an appetizer that’s both refined and satisfying.

## Béarnaise Sauce: A French Culinary Classic

Béarnaise sauce is a rich, buttery emulsion similar to Hollandaise but flavored with shallots, tarragon, and vinegar reduction. It dates back to 1836, credited to French chef Jules Collinet, and has become a hallmark of French cuisine. The sauce’s creamy texture and bright, herbal notes pair beautifully with beef, particularly cuts like tenderloin that benefit from a luxurious complement.

Making Béarnaise sauce from scratch requires some skill with emulsification and temperature control, but the rewards are immense. The fresh tarragon and vinegar give it a vibrant, slightly tangy flavor that cuts through the richness of beef.

## Ingredients: Building the Perfect Grilled Beef Tenderloin Crostini with Béarnaise Sauce

### For the Crostini:

* 1 French baguette, sliced into ½-inch thick rounds
* 2 tablespoons olive oil (for brushing bread)
* Salt and pepper, to taste

### For the Beef Tenderloin:

* 1 lb beef tenderloin, trimmed and cut into 1-inch thick medallions or strips
* 2 tablespoons olive oil
* Salt and freshly ground black pepper
* 2 garlic cloves, minced
* 1 teaspoon fresh rosemary or thyme (optional)

### For the Béarnaise Sauce:

* 3 egg yolks
* ½ cup unsalted butter (1 stick), melted and hot
* 2 tablespoons white wine vinegar
* 2 tablespoons dry white wine
* 1 shallot, finely chopped
* 1 tablespoon fresh tarragon, chopped (plus extra for garnish)
* Salt and freshly ground white pepper, to taste
* Lemon juice (optional, to taste)

## Equipment and Tools You’ll Need

* Grill or grill pan
* Mixing bowls
* Small saucepan
* Whisk
* Heatproof bowl (for double boiler setup)
* Tongs
* Baking sheet or grill basket (for crostini)
* Knife and cutting board

## Step-by-Step Instructions

### Preparing the Crostini

1. **Preheat your oven or grill:** If using the oven, set to 400°F (200°C). If using a grill, preheat to medium-high heat.
2. **Slice the baguette:** Cut into ½-inch rounds ensuring even thickness for uniform toasting.
3. **Brush with olive oil:** Lightly brush both sides of each baguette slice with olive oil.
4. **Toast the bread:** Arrange slices on a baking sheet or grill basket. Toast until golden and crisp, about 3-4 minutes per side. Remove and set aside.

### Marinating and Grilling the Beef Tenderloin

1. **Season the beef:** Rub the beef medallions with olive oil, salt, pepper, minced garlic, and fresh herbs if using. Let marinate for 10-15 minutes.
2. **Grill the beef:** Place the beef pieces on the hot grill or grill pan. Cook for about 3-4 minutes per side for medium-rare (internal temp \~135°F/57°C), or longer if desired. Avoid overcooking to maintain tenderness.
3. **Rest the meat:** Remove from heat and let rest for 5 minutes to allow juices to redistribute.

### Making the Béarnaise Sauce

1. **Prepare the vinegar reduction:** In a small saucepan, combine white wine vinegar, white wine, shallots, and half the tarragon. Simmer over medium heat until reduced to about 2 tablespoons. Strain to remove solids and set aside to cool slightly.
2. **Set up a double boiler:** Place a heatproof bowl over a pot of simmering water, ensuring the bowl does not touch the water.
3. **Whisk egg yolks:** Add the egg yolks and reduced vinegar mixture to the bowl. Whisk continuously until the mixture thickens and doubles in volume (about 3-5 minutes).
4. **Add butter:** Slowly drizzle in the hot melted butter while whisking constantly to emulsify the sauce. The sauce should become thick and creamy.
5. **Season:** Stir in remaining tarragon, salt, white pepper, and a squeeze of lemon juice if desired. Keep warm until ready to serve.

## Assembly

1. **Top crostini with beef:** Place a grilled beef medallion or strip on each toasted baguette slice.
2. **Drizzle Béarnaise sauce:** Spoon a generous amount of Béarnaise sauce over the beef.
3. **Garnish:** Sprinkle extra chopped tarragon or freshly cracked pepper for a fresh finish.
4. **Serve immediately:** These crostini are best enjoyed fresh and warm.


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