As I was chopping up seasonal veggies, the warm scents of roasted butternut squash and leeks started to swirl around my kitchen, instantly bringing autumn to life. I knew I was about to create a dish that makes weeknight dinners feel special—my One-Pan Roasted Chicken Leek and Butternut Squash Bake. Not only does it combine succulent chicken thighs with sweet, caramelized vegetables, but it’s also the ultimate comfort food that’s family-friendly and a breeze to whip up. Cleanup is easy, too, making it a perfect addition to your busy autumn nights. Are you ready to cozy up to a plate of simple yet satisfying delights? Let’s dive into the recipe!

Why Is This Bake So Special?
One-Pan Wonder: Cleanup is a breeze, making this a hassle-free option for busy weeknight dinners.
Fall Flavors: The sweet butternut squash and mild leeks perfectly complement the juicy chicken, creating a heartwarming dish that’s as comforting as a warm hug.
Family-Friendly: Packed with nutritious ingredients, this recipe is sure to please even the pickiest eaters while promoting healthy eating.
Customizable: Feel free to swap in seasonal veggies or adjust the spices to match your taste, just like you would in my popular Mediterranean Chicken Bowls or Chicken Vesuvio Succulent.
Flavorful Finish: A sprinkle of freshly grated Parmesan cheese adds a savory crust, elevating your dish to gourmet-level taste without the fuss.
Comfort Food Magic: Each bite delivers a cozy, satisfying experience, perfect for gathering around the table with loved ones.
Roasted Chicken Leek and Butternut Squash Bake Ingredients
For the Chicken
• Boneless Skinless Chicken Thighs (1 1/3 lb) – Provides tenderness and moisture; chicken breasts can be used but may dry out during longer cooking.
• Salt and Ground Black Pepper – Essential for seasoning; adjust to taste.
• Salted Butter (1 tbsp) or Olive Oil – Used for browning chicken; olive oil can replace butter for a dairy-free option.
For the Vegetables
• Yellow Onion (1, sliced) – Adds sweetness and depth; substitute with shallots or a red onion for a different flavor.
• Butternut Squash (1 1/3 lb, peeled and diced) – Adds sweetness and a creamy texture when roasted; sweet potatoes are a good alternative.
• Leeks (3, cleaned and sliced) – Delivers a mild, sweet onion flavor; can be replaced with green onions or regular onions in a pinch.
• Chopped Garlic (1 tbsp or 3 cloves, crushed) – For pungency and aroma; garlic powder can be a substitute.
For Seasoning
• Dried Parsley Flakes (1 tsp) – Adds herbal flavor; fresh parsley can be substituted for a more vibrant taste.
• Dried Thyme (1/2 tsp) – Enhances the aromatic profile; consider using fresh thyme if available.
• Paprika (1 tsp) – Contributes warmth and color; smoked paprika can add a deeper flavor.
For Baking
• Chicken Broth (1 cup, preferably Better Than Bouillon) – Provides moisture and flavor; vegetable broth can be used for a vegetarian option.
• Freshly Grated Parmesan Cheese (3 oz, about 80 g) – Adds a savory crust; nutritional yeast can be a dairy-free substitute.
• Fresh Parsley Leaves, Chopped (about a handful) – For garnish and freshness; any fresh herb can be used as a garnish.
Using these ingredients will bring your Roasted Chicken Leek and Butternut Squash Bake to life, making it a delightful centerpiece for any autumn meal!
Step‑by‑Step Instructions for Roasted Chicken Leek and Butternut Squash Bake
Step 1: Preheat Your Oven
Begin by preheating your oven to 180°C fan (200°C/400°F/Gas Mark 6). This ensures the perfect cooking environment for your Roasted Chicken Leek and Butternut Squash Bake, allowing the chicken to become tender and the vegetables to caramelize beautifully. While the oven is warming up, gather your other ingredients so everything is ready for the next steps.
Step 2: Prepare the Chicken
Cut the boneless skinless chicken thighs into thirds to facilitate quicker cooking. Season them generously with salt and ground black pepper. In a hot frying pan, melt 1 tablespoon of butter or heat olive oil, then sear the seasoned chicken pieces until they are golden brown on all sides, approximately 4-5 minutes. This step will enhance the flavor of your dish.
Step 3: Cook the Vegetables
In that same frying pan, add a bit more butter if needed and toss in the sliced onion and diced butternut squash. Sprinkle in 1 teaspoon of paprika and sauté for about 6-7 minutes, stirring occasionally, until the squash starts to soften and the onion is translucent. This mixture will form the flavorful base of your Roasted Chicken Leek and Butternut Squash Bake.
Step 4: Add the Leeks and Garlic
Next, stir in the cleaned and sliced leeks along with the chopped garlic. Continue cooking the mixture for another 5-7 minutes, until the leeks are tender and slightly golden. As the leeks cook, they’ll release their sweet flavors into the vegetables, adding depth to your dish.
Step 5: Assemble the Bake
Transfer the cooked vegetables into a large ovenproof dish evenly, then place the golden seared chicken on top. Pour in 1 cup of chicken broth, ensuring the chicken and vegetables are well moistened. Finish by sprinkling the freshly grated Parmesan cheese over the entire dish to create a delicious crust when baked.
Step 6: Bake to Perfection
Cover the dish with aluminum foil and bake in your preheated oven for 15 minutes. After this time, remove the foil and bake uncovered for an additional 15 minutes, or until the chicken is cooked through and golden on top. This step is crucial for allowing the flavors to meld together wonderfully in your Roasted Chicken Leek and Butternut Squash Bake.
Step 7: Final Touches
Once baked, check that the chicken has reached an internal temperature of 165°F. Season your dish with extra salt and pepper to taste. Before serving, garnish with freshly chopped parsley for a burst of color and flavor. Your cozy Roasted Chicken Leek and Butternut Squash Bake is now ready to warm your family’s hearts!

Make Ahead Options
These Roasted Chicken Leek and Butternut Squash Bake ingredients can be prepped ahead to make your weeknight dinners a breeze! You can chop the vegetables (leeks, onions, and butternut squash) and season the chicken up to 24 hours in advance; simply refrigerate them in an airtight container. For the best quality, store the prepared veggies separately to prevent moisture from affecting their texture. When you’re ready to bake, sear the chicken and combine everything as instructed, then bake as usual. This way, you’ll save precious time during busy evenings and enjoy a comforting homemade meal that’s just as delicious!
What to Serve with Roasted Chicken Leek and Butternut Squash Bake
The perfect meal deserves perfect companions that enhance its cozy flavors and textures, creating a warm dining experience for your family.
- Crusty Bread: Ideal for soaking up the flavorful juices, crusty bread adds a satisfying chew alongside your bake.
- Garlic Green Beans: Tender green beans sautéed with garlic bring a crisp freshness that balances the richness of the chicken and squash.
- Mixed Greens Salad: A simple salad with a light vinaigrette provides a refreshing counterpart, brightening up the meal with a burst of zing.
For a complete experience, consider making these garlic green beans with a sprinkle of toasted almonds; they add an extra crunch that contrasts beautifully with the tender bake. You’ll want to ensure every bite is an adventure of flavor and texture!
- Cranberry Sauce: A touch of sweetness and acidity from homemade or store-bought cranberry sauce can elevate the dish, echoing the warmth of the fall season.
- Roasted Root Vegetables: Seasonal veggies like carrots and parsnips, roasted until caramelized, mirror the ingredients of your bake while showcasing seasonal flavors.
- Chardonnay or Pinot Noir: A glass of these wines pairs beautifully, complementing the savory elements with their bright acidity and subtle fruitiness.
Pairing your Roasted Chicken Leek and Butternut Squash Bake with these delightful sides will create a vibrant, wholesome meal that’s perfect for any autumn gathering!
Roasted Chicken Leek and Butternut Squash Bake Variations
Get ready to personalize this delightful dish and cater it to your taste buds!
- Dairy-Free: Replace Parmesan cheese with nutritional yeast for a tasty, dairy-free alternative while still keeping that savory flavor.
- Spicy Version: Add red pepper flakes or cayenne pepper to amp up the heat for those who love a bit of spice in their meals.
- Seasonal Swap: Substitute butternut squash with sweet potatoes or seasonal veggies like carrots or parsnips for a unique twist.
- Herb Upgrade: Use fresh thyme instead of dried for a more robust herbal flavor that infuses beautifully throughout the dish.
- Bone-In Chicken: Swap out boneless thighs for bone-in chicken pieces; just remember to adjust your cooking time for those luscious flavors.
- Garlic Lovers: Increase the garlic to 2 tablespoons (or 6 cloves) for those who crave a more intense garlic punch in their bake.
- Veggie Boost: Toss in some spinach or kale during the last few minutes of cooking for added color, nutrition, and a beautiful look.
- Crispy Topping: Crush some whole-grain or gluten-free breadcrumbs mixed with olive oil and sprinkle over the top for a crunchy finish, just like in my Creamy Rotisserie Chicken Pasta.
Make this roasted chicken bake your own and experience the joy of creating a dish that’s perfect for your family!
How to Store and Freeze Roasted Chicken Leek and Butternut Squash Bake
Fridge: Store leftovers in an airtight container for up to 4 days. Make sure to cool completely before sealing to maintain freshness.
Freezer: Portion the bake into individual servings, then freeze in airtight containers for up to 3 months. This makes meal prep simple for busy nights.
Reheating: For best results, reheat in the oven at 350°F (175°C) until warmed through. If it appears dry, add a splash of chicken broth for moisture.
Thawing: To enjoy your delicious Roasted Chicken Leek and Butternut Squash Bake, transfer it from the freezer to the fridge to thaw overnight before reheating.
Expert Tips for Roasted Chicken Leek and Butternut Squash Bake
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Prep Vegetables Right: Cut your butternut squash into even 1-inch cubes for consistent cooking. This avoids any undercooked pieces in your Roasted Chicken Leek and Butternut Squash Bake.
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Don’t Overcrowd: Ensure ingredients are spread in a single layer in your baking dish. Overcrowding leads to steaming, which robs the vegetables of their lovely caramelization.
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Sear for Flavor: Always brown the chicken before baking. This step enhances the overall flavor, creating a rich base that elevates every bite of your cozy bake.
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Check Temperature: Use an instant-read thermometer to ensure the chicken has reached an internal temperature of 165°F. This guarantees safe and juicy chicken in your dish.
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Taste and Adjust: Don’t forget to taste and season your dish after baking. Adding a pinch of salt or pepper can enhance the flavors in your Roasted Chicken Leek and Butternut Squash Bake tremendously.
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Get Creative: Feel free to switch out the vegetables or spices based on your preference or what’s in season. Make it your own while keeping the essence of comfort food alive!

Roasted Chicken Leek and Butternut Squash Bake Recipe FAQs
What should I look for when selecting butternut squash?
Choose a firm butternut squash that feels heavy for its size, with a mottled beige skin. Look for one without dark spots or bruises, indicating freshness. Avoid those with soft spots or blemishes for the best flavor and texture in your dish.
How should I store leftovers from the bake?
After cooling, store your Roasted Chicken Leek and Butternut Squash Bake in an airtight container in the fridge for up to 4 days. Make sure it’s cooled completely to retain optimal freshness and flavor. When ready to reheat, simply pop it in the oven at 350°F (175°C) until warmed through.
Can I freeze the Roasted Chicken Leek and Butternut Squash Bake?
Absolutely! Portion the bake into individual servings and freeze in airtight containers for up to 3 months. When you’re ready to enjoy it, thaw overnight in the fridge. To reheat, place it in the oven at 350°F (175°C) until heated thoroughly—this helps maintain the dish’s beautiful texture.
What if my chicken isn’t cooked thoroughly after baking?
If your chicken isn’t fully cooked, return the dish to the oven and bake it covered for an additional 5-10 minutes. Always check with an instant-read thermometer; it should read 165°F (75°C) for safe consumption. This ensures every bite of your Roasted Chicken Leek and Butternut Squash Bake is safe and delicious!
Can I make this dish dairy-free?
Absolutely yes! Simply substitute the salted butter with olive oil and replace the freshly grated Parmesan cheese with nutritional yeast for a dairy-free version that still packs a punch of flavor. Everyone deserves to enjoy this comforting bake, regardless of dietary restrictions!

Cozy Roasted Chicken Leek and Butternut Squash Bake Delight
Ingredients
Equipment
Method
- Preheat your oven to 180°C fan (200°C/400°F/Gas Mark 6).
- Cut the boneless skinless chicken thighs into thirds and season with salt and pepper. In a hot pan, melt butter or heat olive oil, then sear chicken until golden brown, about 4-5 minutes.
- In the same pan, add more butter if needed, toss in the sliced onion and diced butternut squash, sprinkle with paprika, and sauté for 6-7 minutes until softened.
- Stir in cleaned and sliced leeks along with the chopped garlic. Continue cooking for an additional 5-7 minutes until leeks are tender.
- Transfer cooked vegetables into a large ovenproof dish and place seared chicken on top. Pour in chicken broth and sprinkle with Parmesan cheese.
- Cover with aluminum foil and bake for 15 minutes, then remove foil and bake uncovered for another 15 minutes until chicken is cooked through.
- Check chicken internal temperature is 165°F, season with extra salt and pepper to taste, and garnish with freshly chopped parsley before serving.

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