Lemony Chicken Thighs with Hazelnut Romesco: A mouthwatering, easy-to-make recipe that’s a flavor explosion in every bite.
Ingredients and Substitutions
Essential Ingredients You’ll Need
To bring this delightful dish to life, you’ll need a carefully curated selection of fresh, flavorful ingredients. Here’s a detailed look at what goes into crafting Lemony Chicken Thighs with Hazelnut Romesco:
- Chicken Thighs (Bone-In, Skin-On): These are the star of the dish, providing juicy meat and a crispy skin that holds up well during roasting.
- Fresh Lemons: You’ll need both the juice and zest to infuse the chicken with vibrant citrus notes.
- Extra-Virgin Olive Oil: Adds richness and helps in crisping the chicken skin while also serving as a base for the romesco sauce.
- Hazelnuts (Toasted): These lend a unique nutty depth to the romesco, setting this version apart from traditional recipes that often use almonds.
- Red Bell Peppers (Roasted): They bring sweetness and a slight smokiness that perfectly complements the sauce’s tang.
- Garlic Cloves: Essential for adding a punch of aromatic flavor.
- Sherry Vinegar: Adds brightness and balances the rich nuts and peppers in the sauce.
- Smoked Paprika: For that characteristic Spanish warmth and subtle smokiness.
- Crusty Bread or Bread Crumbs: Helps thicken the sauce, giving it the perfect consistency.
- Salt and Black Pepper: Basic seasonings that enhance every layer of flavor.
Easy Swaps for Dietary Preferences
Cooking at home means you can always tailor a recipe to fit your tastes and dietary needs. Here are some simple ingredient swaps:
- Chicken: If you prefer leaner cuts, you can substitute with boneless, skinless chicken breasts. Just be mindful to adjust the cooking time, as they tend to dry out faster than thighs.
- Hazelnuts: Not a fan of hazelnuts or have a nut allergy? Almonds, cashews, or even sunflower seeds make great alternatives, each adding its own twist to the romesco.
- Sherry Vinegar: If you don’t have sherry vinegar on hand, apple cider vinegar or red wine vinegar can provide a similar tang.
- Red Bell Peppers: You can use jarred roasted red peppers for convenience, but freshly roasted ones deliver superior flavor.
- Bread Crumbs: For a gluten-free option, use gluten-free bread crumbs or skip the bread altogether and let the sauce be a little looser.
This flexibility ensures that everyone at the table can enjoy this dish, no matter their preferences or dietary needs.

Step-by-Step Cooking Guide
Prepping the Chicken for Maximum Flavor
Achieving the perfect Lemony Chicken Thighs with Hazelnut Romesco starts with properly prepping your chicken thighs. Begin by patting the thighs dry with paper towels—this step ensures the skin will crisp up beautifully in the oven. Generously season both sides of the chicken with salt and black pepper, allowing the seasoning to penetrate the meat and enhance its natural flavors.
Next, add a burst of citrus by zesting a fresh lemon over the chicken, followed by a squeeze of its juice. This step not only infuses the meat with bright, tangy notes but also helps tenderize it, creating a more succulent bite. Let the chicken rest for at least 20 minutes to allow the flavors to marry while you prepare the sauce.
Creating the Perfect Hazelnut Romesco
While the chicken rests, it’s time to craft the heart of this dish: the Hazelnut Romesco sauce. Start by toasting the hazelnuts in a dry skillet over medium heat until they become golden and fragrant, stirring frequently to prevent burning. Once toasted, let them cool slightly before roughly chopping.
In a food processor, combine the roasted red bell peppers, toasted hazelnuts, garlic cloves, and a slice of crusty bread or bread crumbs. Blend until the mixture starts to come together. Slowly drizzle in the extra-virgin olive oil while continuing to blend until the sauce reaches your desired consistency—smooth but with a little texture is ideal.
Next, add a splash of sherry vinegar, a generous pinch of smoked paprika, and season with salt and black pepper to taste. Blend once more to combine. Taste and adjust seasoning as needed, balancing the acidity, smokiness, and nuttiness to create a sauce that sings with flavor.
Finally, preheat your oven to 400°F (200°C). Place the marinated chicken thighs skin-side up on a baking sheet lined with parchment paper. Roast for 35-40 minutes or until the skin is crispy and the meat is cooked through to an internal temperature of 165°F (74°C). Serve the chicken hot, generously drizzled with your homemade Hazelnut Romesco.
Understanding Lemony Chicken Thighs
What Makes Chicken Thighs So Juicy and Flavorful
Chicken thighs are often overlooked in favor of chicken breasts, but they truly deserve a spotlight in the kitchen. Unlike leaner cuts, thighs are naturally higher in fat content, which means they retain moisture even when cooked at high temperatures. This results in a juicy, tender bite every time, making them perfect for roasting, grilling, or pan-searing. The fat also acts as a carrier for flavor, allowing the bright lemon zest to seep deep into the meat, giving you a mouthful of taste with every bite.
Cooking chicken thighs with the skin on not only protects the meat but also creates an irresistible crispy texture. The skin helps render the fat, crisping up beautifully under the oven’s heat while keeping the meat beneath it moist. That’s why chefs and home cooks alike often choose thighs for recipes that call for robust flavors and longer cooking times.
The Role of Lemon in Elevating the Dish
Lemon is the secret weapon in this recipe, transforming simple chicken thighs into a vibrant, citrus-infused delight. Its acidic punch cuts through the richness of the chicken and hazelnuts, balancing the dish with a burst of freshness. When lemon zest is added, it releases essential oils that intensify the overall aroma and flavor profile, making the dish truly unforgettable.

The acidity in lemon juice also helps tenderize the chicken, breaking down proteins and ensuring each bite is melt-in-your-mouth tender. Whether you’re using fresh lemon juice, zest, or both, this ingredient brings a sunshine-like brightness that ties the entire dish together. Think of it as the bridge that connects the rich, nutty notes of the romesco sauce with the savory, juicy chicken, creating a harmony of flavors that’s hard to resist.
All About Hazelnut Romesco Sauce
History and Origin of Romesco Sauce
Romesco sauce, with its rich heritage, hails from the Catalonia region in northeastern Spain. Traditionally, fishermen created this sauce as a flavorful accompaniment to seafood, using roasted peppers, tomatoes, nuts, and bread to add depth and body. Over time, it has evolved to become a versatile addition to meats, vegetables, and even pasta dishes.
The beauty of romesco lies in its adaptability—its base of roasted red peppers, nuts, and olive oil provides a canvas for countless variations. Some recipes add almonds, while others feature hazelnuts for a unique twist. What makes hazelnut romesco stand out is its toasty, nutty character that perfectly balances the sauce’s tanginess and sweet-smoky undertones.
Why Hazelnuts Add a Unique Twist
While traditional romesco often features almonds, substituting hazelnuts elevates the sauce with a deep, roasted flavor and a luxurious creaminess. Hazelnuts are naturally rich and slightly sweet, which complements the smoky, roasted red peppers beautifully.
Hazelnuts also enhance the sauce’s texture, giving it a satisfying crunch when coarsely ground or a velvety smoothness when blended thoroughly. This richness pairs perfectly with the lemony chicken thighs, adding a layer of complexity to the dish that keeps every bite interesting.
Beyond flavor, hazelnuts bring nutritional benefits too. They’re loaded with healthy fats, vitamins, and minerals, making them a heart-healthy addition that satisfies your taste buds and your body.

Serving Suggestions
Perfect Sides to Complement This Dish
Lemony Chicken Thighs with Hazelnut Romesco deserves a supporting cast of sides that balance its bright, nutty flavors and bring the whole meal together. Here are some tried-and-true pairings to elevate your dining experience:
- Roasted Vegetables: Think charred carrots, zucchini, or asparagus. Their caramelized edges and earthy sweetness perfectly complement the zesty chicken and smoky sauce.
- Simple Green Salad: A light salad with mixed greens, a splash of lemon vinaigrette, and a sprinkle of sea salt balances the dish’s richness.
- Herbed Couscous or Quinoa: These grains soak up the romesco sauce beautifully and add a satisfying, hearty base to the meal.
- Crusty Bread: Ideal for mopping up every last bit of sauce from your plate.
These sides add color, texture, and nutritional balance, making your dinner table both inviting and satisfying.
Wine Pairings and Beverage Ideas
No dinner is complete without a refreshing drink to round out the flavors. Here are some ideal pairings:
- White Wine: A crisp Sauvignon Blanc or a lightly oaked Chardonnay balances the acidity of the lemon while complementing the nutty romesco sauce.
- Red Wine: If you prefer red, a light Pinot Noir or Grenache with soft tannins pairs nicely with the dish’s smoky and nutty notes.
- Non-Alcoholic Options: Sparkling water with a slice of lemon or a chilled herbal iced tea with a hint of mint offers a refreshing, palate-cleansing sip.
By pairing this dish with the right sides and drinks, you’ll create a meal that feels both sophisticated and comforting—perfect for everything from a casual family dinner to an elegant dinner party.
FAQs
PPA1: Can I Use Boneless Chicken Thighs Instead?
Absolutely! Boneless chicken thighs work great in this recipe and cook a bit faster than bone-in cuts. Just be sure to adjust your roasting time to avoid overcooking, as boneless thighs may dry out more quickly.
PAA2: How Can I Make It Spicier?
If you love a kick of heat, add a pinch of cayenne pepper or red pepper flakes to the Romesco sauce. You can also sprinkle a bit of smoked paprika over the chicken before roasting to enhance the smoky heat.
PAA3: What’s the Best Way to Store Leftovers?
Store any leftover chicken and sauce separately in airtight containers in the refrigerator for up to 3 days. Reheat gently in the oven or microwave until warmed through.
PAA4: Can I Freeze the Romesco Sauce?
Yes! Romesco sauce freezes beautifully. Pour it into an airtight container and freeze for up to 2 months. Thaw overnight in the fridge and stir well before serving.
PAA5: What’s the Difference Between Romesco and Pesto?
Great question! While both are vibrant sauces, Romesco uses roasted red peppers, nuts (like hazelnuts or almonds), and vinegar, giving it a sweet, smoky flavor. Pesto is typically made with basil, pine nuts, and Parmesan, offering a fresh, herbal taste.
PAA6: Can I Use Almonds Instead of Hazelnuts?
Definitely. Almonds are a classic ingredient in traditional Romesco sauce and add a slightly different nutty profile. Toast them before blending to enhance their flavor.
Conclusion
Lemony Chicken Thighs with Hazelnut Romesco is more than just a meal; it’s a celebration of Mediterranean flavors that come together in a beautifully balanced dish. From the juicy, citrus-infused chicken to the rich, nutty Romesco sauce, every bite is a harmonious blend of tangy, savory, and smoky notes that’s sure to impress.
Whether you’re serving this for a family dinner, a date night, or a special gathering with friends, it’s a dish that brings people together over the table. By following our tips on prepping, roasting, and pairing, you’ll master this recipe with ease and confidence. Get ready to wow your guests (and yourself!) with this unforgettable culinary experience.