Grilled Beef Tenderloin Crostini with Béarnaise Sauce

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Sink your teeth into the ultimate crowd-pleaser: Grilled Beef Tenderloin Crostini with Béarnaise Sauce. These small bites pack a big punch, combining the richness of perfectly grilled tenderloin with the sharp tang of Béarnaise and the crunch of golden toasted baguette slices. Ideal for cocktail parties, game-day spreads, or impressing guests at your next gathering, this appetizer effortlessly delivers restaurant-quality flavor at home.

Imagine a buttery, herbaceous sauce draping over medium-rare beef medallions, perched atop crisp crostini. It’s a sophisticated bite that requires surprisingly little effort to pull off, making it just as perfect for holiday entertaining as it is for a romantic dinner at home. Serve these beauties with a glass of red, and you’ve got yourself a showstopper.

What Cut of Beef is Best for Crostini?

Beef tenderloin is hands-down the best choice for crostini. It’s luxuriously tender, mild in flavor, and cooks quickly to that perfect blush pink inside. Because you’re only using thin slices, you want a cut that practically melts in your mouth—and tenderloin delivers just that.

If you’re feeling adventurous or want a more economical option, filet mignon medallions or even sirloin steak can work, though they may be a bit firmer.

Ingredients for the Grilled Beef Tenderloin Crostini with Béarnaise Sauce

Beef Tenderloin: The star of the show. Its buttery texture and lean profile make it ideal for searing and slicing.

Baguette: Crisp, toasted slices form the base of the crostini. Go with a fresh French baguette, sliced into 1/2-inch rounds.

Olive Oil: Used for brushing the bread and searing the beef. Choose a good-quality extra virgin olive oil for added flavor.

Salt & Pepper: A generous sprinkle before grilling enhances the beef’s natural flavors.

Fresh Chives: For garnish. Adds a subtle oniony note and a fresh pop of color.

Béarnaise Sauce: This classic French sauce is what takes the crostini from good to gourmet. Made with egg yolks, butter, white wine vinegar, tarragon, and shallots, it’s creamy, tangy, and deeply aromatic.

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How To Make the Grilled Beef Tenderloin Crostini with Béarnaise Sauce

Step 1: Prepare the Crostini Base

Preheat your oven to 375°F. Slice a French baguette into 1/2-inch rounds and arrange on a baking sheet. Brush each side lightly with olive oil. Bake for 8–10 minutes, flipping halfway through, until both sides are golden and crisp. Set aside to cool.

Step 2: Season and Sear the Beef

While the crostini bakes, pat the beef tenderloin dry with paper towels. Season generously with salt and freshly cracked black pepper. Heat a cast-iron skillet or grill pan over high heat with a splash of olive oil. Once the pan is hot, sear the beef for about 3–4 minutes per side for medium-rare. Let it rest for 5–10 minutes, then slice thinly against the grain.

Step 3: Make the Béarnaise Sauce

In a small saucepan, combine 1/4 cup white wine vinegar, 1 tablespoon finely chopped shallots, and 1 tablespoon chopped fresh tarragon. Simmer until reduced by half. Strain if desired.

In a heat-safe bowl over simmering water, whisk 3 egg yolks with the reduction until slightly thickened. Slowly drizzle in 1/2 cup melted butter, whisking constantly until smooth and velvety. Season with salt and pepper. Keep warm.

Step 4: Assemble the Crostini

Place one slice of grilled beef on each crostini. Spoon a dollop of warm Béarnaise sauce over the top. Finish with freshly chopped chives and a crack of black pepper.

Step 5: Serve Immediately

These are best served fresh while the sauce is warm and the crostini crisp. Arrange on a platter and serve right away for maximum flavor and texture.

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How to Serve and Store Grilled Beef Tenderloin Crostini with Béarnaise Sauce

Serve these crostini warm, ideally right after assembling. The contrast of hot beef, creamy Béarnaise, and crisp toast creates the perfect bite. Arrange them on a platter for gatherings, or plate a few for a romantic appetizer for two. They shine best at room temperature within 20 minutes of serving.

To store, keep components separate: refrigerate the sliced beef and sauce in airtight containers for up to 2 days. Reheat the beef gently (just enough to take the chill off) and whisk the Béarnaise over low heat or in a double boiler to restore its silky texture. The crostini can be stored at room temp in an airtight bag for a couple of days.

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What to Serve With Grilled Beef Tenderloin Crostini?

Roasted Rosemary Sweet Potatoes

The sweet and savory contrast complements the richness of the crostini. Try our Roasted Rosemary Sweet Potatoes.

Dad’s Creamy Cheesy Au Gratin Potatoes

For an ultra-comforting side, you can’t go wrong with cheesy potatoes layered in cream.

Classic Caesar Salad

Its crunchy romaine and tangy dressing provide a refreshing palate cleanser.

Red Wine-Glazed Mushrooms

Add more depth to the beef by pairing it with earthy mushrooms simmered in red wine.

Garlic Green Beans

Keep it crisp and simple with tender green beans tossed in garlic butter.

White Cheddar Chicken Pasta

Want to turn this into a full meal? This cheesy pasta dish balances the tangy crostini beautifully.

Sparkling Red or Pinot Noir

Don’t forget the wine. The bright acidity of a red will cut through the richness of the Béarnaise and beef.

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Want More Appetizer Ideas with Bold Flavors?

If you’re a fan of these Grilled Beef Tenderloin Crostini with Béarnaise Sauce, you’ll definitely want to explore these other creative bites and savory treats:

• Jalapeno Popper Deviled Eggs for a creamy, spicy party pop.
• Creamy Parmesan Italian Sausage Soup as a hearty companion to light crostini.
• Crispy Chicken Fried Chicken if you’re leaning toward something crispy and comforting.
• Cheeseburger Soup for a warm, cheesy dinner idea with ground beef.
• Garlic Butter Steak Parmesan Rigatoni to turn any meal into a steakhouse experience.

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Save This Pin For Later

Save this delicious idea to your favorite Pinterest board so it’s easy to find when you’re ready to whip it up again.

Tried it with a twist? Maybe a splash of bourbon or a drizzle of glaze? I’d love to hear how it turned out—drop your tips or questions in the comments below.

Need more inspiration? Explore my daily kitchen creations on SavorQueen Recipes on Pinterest. Your next favorite might be waiting there.

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