As the sun begins to set and the grill sizzles with anticipation, there’s nothing quite like the aroma of Grilled Lemon Dijon Chicken Thighs wafting through the air. This vibrant dish is not only a celebration of fresh flavors—thanks to its zesty marinade of lemon, Dijon mustard, and garlic—but also offers a quick and easy way to elevate your weeknight meals. With gluten-free and Whole30 options, it caters to varied dietary needs while remaining a comfort food favorite. Imagine enjoying tender chicken, perfectly charred and paired with caramelized onions that add a hint of sweetness—it’s a meal the whole family can savor. Ready to take your grilling adventures to the next level? Let’s dive into this easy recipe that promises to make your summer cookouts unforgettable!

Why Choose Lemon Dijon Chicken Thighs?
Flavor Explosion: The marinade combines zesty lemon, sharp Dijon, and aromatic garlic for a taste that dances on your palate.
Quick and Easy: In just a few steps, you can create a mouthwatering dish that’s perfect for busy weeknights or last-minute gatherings.
Versatile Pairing: Serve it alongside caramelized onions or grill some vegetables for a vibrant, colorful plate that appeals to all.
Diet-Friendly: This recipe is gluten-free, Whole30, and low-carb, making it a hit for various dietary preferences.
Crowd Pleaser: Everyone will love the juicy charred chicken, making it a guaranteed winner for your next summer barbecue or family dinner.
For additional delicious grilled recipes, check out our Thai Fried Chicken and Hot Honey Chicken Bowl for more flavor inspirations!
Lemon Dijon Chicken Thighs Ingredients
For the Marinade
- Boneless skinless chicken thighs – Primary protein; tender and juicy when grilled. Substitute with boneless skinless chicken breasts if preferred.
- Fresh lemon juice – Adds acidity and brightness; fresh is recommended for optimal flavor, though bottled can work in a pinch.
- Dijon mustard – Provides flavor; look for a Paleo/Whole30 friendly option without complex preservatives.
- Olive oil – Adds moisture; can be swapped for avocado oil for a different taste.
- Garlic cloves (minced) – Enhances flavor depth; fresh is best, but garlic powder can substitute if you’re in a hurry.
- Oregano – Offers earthy notes; Italian seasoning can also work if you’re out of oregano.
- Salt and pepper – Essential for enhancing flavor; adjust to your liking.
For Caramelized Onions
- Yellow onions – Sweet and savory; the foundation for delicious caramelization that pairs beautifully with the chicken.
- Butter or olive oil – For sautéing; use butter for richness, or olive oil for a healthier option.
- Salt – Helps draw out moisture from the onions, speeding up the caramelization process.
Unlock the full potential of your Lemon Dijon Chicken Thighs with Caramelized Onions by gathering these essential ingredients, where each one plays a pivotal role in creating a meal bursting with flavor!
Step‑by‑Step Instructions for Lemon Dijon Chicken Thighs with Caramelized Onions
Step 1: Prepare the Marinade
In a medium bowl, whisk together fresh lemon juice, Dijon mustard, olive oil, minced garlic, oregano, salt, and pepper until well combined. The marinade should have a smooth consistency with a vibrant yellow color. This zesty blend will enhance the Lemon Dijon Chicken Thighs, so take a moment to really mix everything well.
Step 2: Marinate the Chicken
Add the boneless skinless chicken thighs to the bowl, ensuring each piece is thoroughly coated with the marinade. Cover the bowl tightly with plastic wrap or transfer the chicken to a resealable bag, pressing out the air. Refrigerate for at least 4 hours but ideally overnight for maximum flavor infusion.
Step 3: Prepare for Grilling
About 30 minutes before grilling, remove the marinated chicken from the refrigerator to let it come to room temperature. While it rests, preheat your grill to medium-high heat (around 400°F). This step ensures even cooking and beautiful grill marks on your Lemon Dijon Chicken Thighs.
Step 4: Prepare the Onions
While the grill heats up, slice the yellow onions into thin rings. In a skillet over medium heat, melt butter or olive oil. Add the onions and a pinch of salt, allowing them to sauté for about 15–20 minutes, stirring occasionally until they become golden and caramelized—this adds a sweet complement to the savory chicken.
Step 5: Grill the Chicken
Once the grill is preheated, remove the chicken thighs from the marinade, letting any excess drip off. Place them directly on the grill grates. Cook for about 4–5 minutes per side, until the internal temperature reaches 160°F and the chicken has lovely grill marks.
Step 6: Serve Deliciously
After grilling, remove the Lemon Dijon Chicken Thighs from the grill and let them rest for a few minutes. Serve the juicy chicken alongside the caramelized onions, allowing the sweet and tangy flavors to mingle beautifully. Pair with your favorite sides for a full, satisfying meal!

What to Serve with Lemon Dijon Chicken Thighs with Caramelized Onions
Brighten your dining table with delightful pairings that elevate your meal experience, complementing the savory and sweet flavors beautifully.
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Grilled Vegetables: A medley of seasonal veggies like zucchini, bell peppers, and asparagus adds a colorful and healthy touch to your plate. Their smoky char enhances the chicken’s flavors.
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Herbed Quinoa Salad: Light and fluffy, this salad features fresh herbs and vegetables, providing a refreshing contrast to the rich chicken while being gluten-free and nutritious.
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Creamy Mashed Cauliflower: Offering a low-carb side that’s rich and creamy, this dish pairs perfectly with the chicken, balancing textures without overshadowing the main attraction.
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Garlic Bread: Crispy and buttery bread with a hint of garlic adds a comforting element to the meal. Size it into smaller slices to share; it’s perfect for soaking up the juices!
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Apple Cider Slaw: The crunch of shredded apples and cabbage offers a zesty kick that complements the sweetness of caramelized onions, bringing brightness to every bite.
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Chardonnay or Sauvignon Blanc: These white wines accentuate the citrus notes of the chicken and pair wonderfully alongside the sweetness of the onions, elevating your dining experience.
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Lemon Sorbet: To cleanse your palate and end the meal on a refreshing note, this light dessert perfectly echoes the lemony marinade, making it a delightful finale.
Each of these pairings harmonizes beautifully with your Lemon Dijon Chicken Thighs with Caramelized Onions, ensuring a memorable meal that delights the senses!
How to Store and Freeze Lemon Dijon Chicken Thighs
Fridge: Store leftover Lemon Dijon Chicken Thighs in an airtight container for up to 3 days. This keeps them fresh while preserving their delicious flavors.
Freezer: If you want to save the marinated chicken for later, freeze it in a resealable plastic bag for up to 3 months. Just ensure you remove as much air as possible before sealing.
Thawing: When ready to use, thaw the chicken thighs overnight in the fridge. This keeps them at a safe temperature while ensuring they remain juicy.
Reheating: Heat the chicken in a skillet over medium heat until warmed through, or pop them in the microwave in short intervals. Enjoy with caramelized onions for maximum flavor!
Make Ahead Options
These Grilled Lemon Dijon Chicken Thighs are perfect for busy meal prep enthusiasts! You can marinate the chicken up to 24 hours in advance, which intensifies the flavors and ensures your chicken is deliciously tender on the grill. To prep, simply mix the marinade and coat the chicken thighs, then cover and refrigerate until you’re ready to cook. For a complete meal while saving time, caramelize the onions ahead of time and store them in the fridge for up to 3 days. When you’re ready to serve, just grill the marinated chicken and reheat the onions. With this make-ahead strategy, you can enjoy a healthy, hassle-free dinner that tastes just as delightful as if you made it last minute!
Lemon Dijon Chicken Thighs Variations
Feel free to get creative with these variations to make the dish resonate with your taste buds!
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Honey Mustard: Swap the Dijon mustard for honey mustard to add a touch of sweetness that perfectly complements the zest.
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Herb Infusion: Experiment with different herbs by substituting oregano with thyme or rosemary for a distinctive flavor twist. Imagine the aromatic scent filling your kitchen!
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Citrus Boost: Add a splash of orange juice to the marinade for a sweeter, citrusy depth that brightens each bite. This change will make the chicken pop with vibrant flavors!
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Spicy Kick: Sprinkle in red pepper flakes or cayenne pepper to the marinade for an exciting heat that elevates the dish to a new level of deliciousness. Your taste buds will thank you for the extra zing!
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Alternative Protein: Swap the chicken thighs out for pork tenderloin or even salmon for a different protein experience that pairs wonderfully with the marinade. Each protein offers a delightful twist on the overall flavor profile.
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Vegan Option: Use marinated and grilled tofu or tempeh for a plant-based version that still captures the essence of this vibrant dish. A delightful option for vegans and meat-lovers alike!
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Vegetable Delight: Marinate and grill thick slices of zucchini or eggplant as a scrumptious side or vegetarian main, infused with all the same flavors of the marinade.
For more grilling inspiration, take a look at our delicious Chicken Gyros Feta and the vibrant Pepper Steak Onions that will wow your family and friends!
Expert Tips for Lemon Dijon Chicken Thighs
Marinade Mastery: Double the marinade and simmer half to use as a flavorful sauce after grilling, adding depth to your Lemon Dijon Chicken Thighs.
Timely Temperature: Always use a meat thermometer to check that the internal temperature reaches 160°F for safe and delicious chicken that’s not dried out.
Onion Perfection: Stir the onions frequently while caramelizing to ensure even browning. Burnt onions can overpower the sweet taste you want to achieve.
Prep Ahead: For a seamless cooking experience, marinate the chicken thighs a day in advance. This helps the flavors penetrate deeply, enhancing each bite.
Choose Fresh: Whenever possible, opt for fresh lemon juice over bottled juice. Fresh juice provides a brighter and more vibrant flavor to your marinade.

Lemon Dijon Chicken Thighs with Caramelized Onions Recipe FAQs
What type of chicken should I use for this recipe?
Absolutely! Boneless skinless chicken thighs are ideal due to their tenderness and juiciness when grilled. However, if you prefer, boneless skinless chicken breasts can also be used. Just note that breasts may require a bit more attention to avoid drying out, as they can cook faster than thighs.
How should I store leftovers?
To keep your Lemon Dijon Chicken Thighs fresh, store any leftovers in an airtight container in the refrigerator for up to 3 days. Just let them cool to room temperature before sealing. This way, you can enjoy the leftover deliciousness without sacrificing flavor!
Can I freeze the marinated chicken?
Very! Freezing is a fantastic option for meal prep. Simply place the marinated chicken thighs in a resealable plastic bag, making sure to squeeze out any excess air. They should maintain quality for up to 3 months in the freezer. When you’re ready to use them, thaw overnight in the fridge before grilling.
How do I know when the chicken is properly cooked?
Using a meat thermometer is the best method! Make sure the internal temperature of the chicken reaches 160°F. It’s crucial to avoid overcooking, as this can dry out the meat. Once done, let the chicken rest for a few minutes before slicing to allow the juices to redistribute.
Can I make this recipe if I have allergies?
Certainly! This recipe is naturally gluten-free, Whole30, and low-carb. For dairy-free options, use olive oil instead of butter for caramelizing the onions. Furthermore, always check labels on Dijon mustard to ensure it’s free from any allergens relevant to your dietary needs. Feel free to adapt ingredients to suit your health requirements!
How do I achieve perfectly caramelized onions?
For sweet, deeply flavored caramelized onions, slice them thinly and sauté them in a skillet over medium heat with butter or olive oil. Add a pinch of salt to help draw out moisture. Stir occasionally for about 15-20 minutes until they’re golden brown and sweet-tasting. Patience is key—don’t rush the process, as low and slow yields the best results!

Lemon Dijon Chicken Thighs with Caramelized Onions Bliss
Ingredients
Equipment
Method
- In a medium bowl, whisk together fresh lemon juice, Dijon mustard, olive oil, minced garlic, oregano, salt, and pepper until well combined.
- Add the boneless skinless chicken thighs to the bowl, ensuring each piece is thoroughly coated with the marinade.
- Cover the bowl tightly with plastic wrap or transfer the chicken to a resealable bag and refrigerate for at least 4 hours or overnight.
- About 30 minutes before grilling, remove the marinated chicken from the refrigerator to let it come to room temperature.
- Preheat your grill to medium-high heat (around 400°F).
- Slice the yellow onions into thin rings and sauté in a skillet over medium heat with butter or olive oil.
- Add the onions and a pinch of salt, sauté for about 15–20 minutes, stirring occasionally until caramelized.
- Once the grill is preheated, remove the chicken thighs from the marinade and place them on the grill.
- Cook for about 4–5 minutes per side until the internal temperature reaches 160°F.
- Let the chicken rest for a few minutes before serving them alongside the caramelized onions.

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