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Tarragon Chicken Salad Crostini is a refined take on a familiar favorite, turning the humble chicken salad into a polished appetizer that looks and tastes as though it belongs at a sophisticated gathering. The star of this dish is the tarragon-infused avocado oil, which lends subtle licorice-like notes that permeate the creamy homemade mayonnaise. When folded into tender pieces of chicken and spread over toasted crostini brushed with the same fragrant oil, the result is an appetizer that feels elevated yet accessible. A sprinkle of microgreens adds not only freshness but also a touch of visual elegance, making the final plate as eye-catching as it is delicious. This recipe transforms simple ingredients into something refined and memorable, offering a balance of texture, aroma, and flavor that leaves a lasting impression.

Full Recipe:

Ingredients

2 cups avocado oil
¾ cup dried tarragon
1 tbsp sunflower lecithin
1 egg yolk
Juice of ½ lemon
About ¾ cup tarragon-infused avocado oil (for mayo)
½ tsp sea salt
3 ½ cups cooked chicken, chopped
1 ½ tbsp stone-ground mustard
Juice of ½ lemon
½ tsp kosher salt
½ tsp ground black pepper
¼ tsp garlic powder
¼ tsp onion powder
1 small baguette (gluten-free if preferred)
¼ cup tarragon-infused avocado oil (for brushing)
⅓ cup rainbow microgreens

Directions

Gently heat avocado oil with dried tarragon to infuse, keeping the temperature around 160°F for about an hour. Strain thoroughly to create a clear, aromatic oil.
In a mixing bowl, whisk together egg yolk, sunflower lecithin, lemon juice, and sea salt. Slowly drizzle in about ¾ cup of the infused oil while whisking vigorously to form a stable mayonnaise.
In another bowl, combine chopped chicken, stone-ground mustard, lemon juice, kosher salt, pepper, garlic powder, onion powder, and several spoonfuls of the tarragon mayonnaise. Mix until well combined.
Slice the baguette into thin rounds, brush each slice lightly with the reserved infused oil, and toast until golden and crisp.
Top each crostini with a generous spoonful of the chicken salad, finishing with a small tuft of microgreens. Serve immediately.

Nutrients

Calories: approximately 247 per serving, with around 13 g fat, 10 g carbs, 22 g protein
Alternatively, some estimates for similar tarragon chicken salad yield about 426 calories per serving with macronutrient split of roughly 43% fat, 53% protein, and 4% carbs
0.5 cup (approx.) options report around 130 calories: 7 g fat, 5 g carbs, 11 g protein
(Nutritional values may vary depending on portion size and exact preparation.)

Why This Recipe Stands Out

This recipe shines because it takes something familiar and transforms it into a gourmet experience without losing the comforting essence of chicken salad. Infusing avocado oil with dried tarragon creates a subtle but complex herbal undertone that ordinary mayonnaise simply cannot replicate. The process itself feels thoughtful, layering depth into the dish, while the use of homemade mayonnaise ensures a silky richness that ties all the flavors together. The toasted crostini acts as the perfect counterpoint, offering crispness that balances the creaminess of the topping. Microgreens crown the appetizer with freshness and vibrant color, elevating the visual appeal. Unlike traditional chicken salad served in a bowl, this version has a structured elegance that makes it ideal for parties, holidays, or any occasion where presentation matters as much as flavor.

The Benefits of the Ingredients

The ingredients in this crostini are not just flavorful but also packed with nutritional benefits. Avocado oil is renowned for its heart-healthy monounsaturated fats, which support cardiovascular wellness and provide a clean, buttery backdrop for the tarragon infusion. Tarragon itself is a unique herb, offering subtle anise notes that enhance the complexity of the dish while also providing antioxidants. Egg yolk and sunflower lecithin are powerful emulsifiers, ensuring the mayonnaise achieves that rich, stable creaminess essential for the salad. Stone-ground mustard introduces a pleasant tang and a bit of texture, complementing the herbaceous oil without overwhelming it. The chicken provides lean protein, making the dish hearty and satisfying while keeping it relatively balanced in terms of macronutrients. Garlic and onion powders add depth and warmth, creating layers of savory flavor, while microgreens contribute both nutrients and visual sophistication. Even the baguette plays a role, giving the dish a crunchy base that contrasts beautifully with the creamy topping. Together, these ingredients not only taste wonderful but also create a nutrient-dense appetizer that feels indulgent yet balanced.

Cooking Tips

To achieve the best results, patience and precision are key during the infusion and mayonnaise-making steps. Infuse the oil gently at low heat, as overheating can cause bitterness and diminish the delicate flavor of tarragon. Once strained, the oil should be clear and fragrant, ready to be used both in the mayonnaise and for brushing the crostini. When making the mayonnaise, add the infused oil slowly in a thin stream while whisking constantly to prevent separation and ensure a silky texture. If the mixture becomes too thick too soon, pause the oil addition and whisk until smooth before continuing. For the crostini, slice the baguette evenly so that all pieces toast consistently, and brush them lightly to avoid greasiness while still achieving that golden crunch. Preparing the chicken salad ahead of time allows the flavors to meld, creating a more harmonious bite. Be mindful with seasoning, as tarragon tends to intensify as it sits, so start with a modest amount and adjust after chilling if necessary. Finally, assemble the crostini just before serving to keep the bread crisp and the microgreens fresh.

Serving Suggestions

These crostini lend themselves beautifully to entertaining and pair well with a wide range of accompaniments. Arrange them artfully on a wooden board or a ceramic platter, and consider adding a sprinkle of lemon zest for brightness and a touch of elegance. They pair wonderfully with sparkling wines, crisp white wines, or light rosés, as the acidity and effervescence cut through the richness of the mayonnaise and chicken. For a more casual setting, serve them alongside a simple mixed greens salad dressed with a citrus vinaigrette, which adds a refreshing counterpoint to the savory crostini. On a party platter, they shine alongside other finger foods such as prosciutto-wrapped melon or deviled eggs, offering variety in both taste and presentation. For cocktail parties, mini versions of the crostini work perfectly, allowing guests to enjoy them in just one or two bites. Their versatility means they can adapt to a wide range of occasions, from formal holiday gatherings to casual lunches with friends.

Conclusion

Tarragon Chicken Salad Crostini is a dish that demonstrates how thoughtful techniques and ingredient choices can elevate something simple into something extraordinary. By using herb-infused oil to craft a silky mayonnaise and layering it with tender chicken, crisp crostini, and fresh microgreens, this recipe becomes more than just an appetizer—it becomes an experience. Each element plays an essential role, from the creaminess of the salad to the crunch of the bread and the herbal brightness of tarragon. The result is an elegant and balanced bite that feels both familiar and fresh, comforting yet refined. This recipe is not only delicious but also versatile, making it suitable for everything from holiday parties to casual get-togethers. Its balance of flavor, texture, and presentation ensures it will stand out on any table, while its approachable method means it is accessible even for home cooks. With its combination of practicality and sophistication, Tarragon Chicken Salad Crostini is destined to become a favorite in your repertoire, offering a dish that both delights the palate and impresses the eye.

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