As the sun sets and the air turns crisp, I can’t help but crave a dish that wraps around me like a warm hug. That’s exactly how I feel about this One-Pan Roasted Chicken Leek and Butternut Squash Bake. It’s a family-friendly comfort food that not only brings the delightful sweetness of butternut squash and milder leeks into harmony with tender chicken thighs, but also transforms a busy weeknight into a cozy culinary experience. This one-pan wonder makes cleanup a breeze, letting you spend more time enjoying hearty flavors and less time at the sink. Ready to impress your loved ones with a dinner that’s as simple as it is satisfying? Let’s get cooking!

Why is this bake a must-try?
Easy Cleanup: This one-pan recipe minimizes mess, making it perfect for busy weeknights when you want comfort food without the hassle.
Flavor Explosion: The blend of savory chicken thighs, sweet butternut squash, and earthy leeks creates a dish that’s bursting with fall flavors.
Family-Friendly: Kids and adults alike will love this delicious meal, making it a go-to for family dinners.
Make-Ahead Convenience: Perfect for meal prep, this bake can be frozen for later, so you always have a cozy meal on hand.
Feel free to explore other hearty dishes like Caribbean Chicken Rice or the comforting Smothered Chicken Rice when you’re looking for variety!
Roasted Chicken Leek and Butternut Squash Bake Ingredients
For the Bake
• Low-calorie oil spray – Prevents sticking for healthier cooking; substitute with olive oil if preferred.
• 1 1/3 lb boneless skinless chicken thighs – Provide tenderness and juiciness; avoid breasts to prevent dryness.
• 1 yellow onion, sliced – Adds sweetness and depth when caramelized.
• 1 1/3 lb butternut squash, peeled and diced – Key veggie that brings sweetness; cut into 1-inch cubes for even cooking.
• 3 leeks, cleaned, trimmed, and cut into slices – Milder than onions, they add rich flavor to the dish.
• 1 tbsp chopped garlic (or 3 garlic cloves, crushed) – Elevates flavor; can use garlic powder if preferred.
• 1 cup (8 fl oz) chicken broth – Adds moisture and depth; Better Than Bouillon is a great choice.
• 3 oz (80 g) freshly grated parmesan cheese – Savory topping; to avoid burning, add toward the end of baking.
For Seasoning
• 1 tsp dried parsley flakes – Introduces herbal notes; fresh parsley is a vibrant alternative.
• 1/2 tsp dried thyme – Offers aromatic earthiness.
• 1 tsp paprika – Provides mild heat and vibrant color.
• Salt and ground black pepper – Essential for seasoning; adjust to taste.
• 1 tbsp salted butter (or olive oil) – Enhances flavor and aids in caramelization.
For Garnish
• Fresh parsley leaves, chopped (about a handful) – For a pop of color and freshness on top of the bake.
Embrace the comforting essence of this Roasted Chicken Leek and Butternut Squash Bake as you gather your ingredients and prepare for a delightful dinner!
Step‑by‑Step Instructions for Roasted Chicken Leek and Butternut Squash Bake
Step 1: Preheat the Oven
Begin by preheating your oven to 180°C fan (200°C/400°F/Gas Mark 6). This temperature is essential for achieving the perfect golden brown finish on your Roasted Chicken Leek and Butternut Squash Bake while ensuring all the flavors meld beautifully. Once the oven reaches the desired temperature, you’ll be ready to prepare your ingredients.
Step 2: Prepare the Chicken
Cut the boneless skinless chicken thighs into thirds and season them generously with salt, ground black pepper, dried parsley, and thyme. Heat a large frying pan over medium-high heat and add the salted butter. Sear the chicken pieces for about 5–7 minutes, turning occasionally, until they are golden brown. Remove the chicken from the pan and set aside.
Step 3: Sauté the Vegetables
In the same pan, melt the remaining butter, then add sliced onions and diced butternut squash along with paprika. Sauté these vegetables for about 8–10 minutes, stirring occasionally, until they begin to soften and caramelize. To enhance the flavor, deglaze the pan with chicken broth, scraping up any tasty bits stuck on the bottom.
Step 4: Add Leeks and Garlic
Now incorporate the cleaned and sliced leeks and minced garlic into the pan with the sautéed onions and butternut squash. Cook for an additional 5 minutes, stirring frequently until the leeks are tender and fragrant. This step will elevate your Roasted Chicken Leek and Butternut Squash Bake by adding depth to the overall flavor profile.
Step 5: Assemble the Bake
Transfer the sautéed vegetable mixture into a large ovenproof dish, spreading it evenly across the bottom. Carefully arrange the seared chicken pieces on top of the vegetables, making sure they are well distributed. This layering ensures that each bite of your bake has a bit of everything, combining the hearty chicken with the sweet vegetables.
Step 6: Add Remaining Ingredients
Pour the remaining chicken broth over the assembled dish, ensuring the juices meld into the layers below. Next, sprinkle the freshly grated parmesan cheese evenly on top, which will create a delightful crust as it bakes. This final touch adds a savory finish to your Roasted Chicken Leek and Butternut Squash Bake.
Step 7: Bake the Dish
Cover the baking dish tightly with aluminum foil and place it in the preheated oven. Bake for 15 minutes, then carefully remove the foil and continue baking for another 15 minutes or until the chicken is cooked through and golden on top. You’ll know it’s ready when the chicken reaches an internal temperature of 165°F and the cheese has melted beautifully.
Step 8: Garnish and Serve
Once baked, remove the dish from the oven and let it rest for a few minutes. Just before serving, sprinkle the top with freshly chopped parsley leaves for a burst of color and freshness. This simple garnish will elevate your Roasted Chicken Leek and Butternut Squash Bake, making it not just delicious but visually appealing as well.

Make Ahead Options
This delicious Roasted Chicken Leek and Butternut Squash Bake is perfect for busy weeknight meal prep! You can chop the butternut squash, leeks, and onions up to 24 hours in advance and store them in an airtight container in the refrigerator to maintain their freshness. Additionally, you can season and sear the chicken thighs, holding off on baking until you’re ready to serve. When it’s time for dinner, simply assemble all ingredients, add the chicken broth and parmesan cheese, cover, and bake according to the instructions. This approach not only saves time but ensures your dinner is just as comforting and satisfying as if you made it from scratch!
Expert Tips for Roasted Chicken Leek and Butternut Squash Bake
- Even Vegetable Cuts: Make sure your butternut squash and leeks are cut to a uniform size for consistent cooking and texture in the bake.
- Don’t Overcrowd: Avoid overcrowding the baking dish, as this can lead to steaming instead of browning, preventing that desirable crispy top.
- Flavor Boost: Always brown the chicken thighs before adding them to the bake; this step enhances flavor and ensures juicy, tender meat in your Roasted Chicken Leek and Butternut Squash Bake.
- Use a Thermometer: For perfect results, use an instant-read thermometer to guarantee the chicken reaches 165°F throughout, ensuring it’s safe and delicious.
- Thaw Frozen Chicken: If using frozen chicken, completely thaw and pat it dry before cooking to avoid excess moisture, which can affect the bake’s texture.
Roasted Chicken Leek and Butternut Squash Bake Variations
Feel free to add your own twist to this cozy dish and make it uniquely yours!
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Bone-In Thighs: Swap chicken thighs for bone-in thighs, increasing cooking time for juicy results. The deeper flavor from the bones makes for a heartier dish that feels just like a warm hug during chilly evenings.
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Sweet Potato Twist: Substitute butternut squash with sweet potatoes for a slightly sweeter profile—both pair beautifully with the chicken. This will introduce a different texture, enriching your meal with vibrant colors and flavors.
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Herb Variation: Use fresh herbs like rosemary or oregano for a fragrant lift instead of dried ones. The freshness can change the whole vibe of the bake, turning it into a delightful garden experience.
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Extra Veggies: Add chopped carrots or parsnips alongside your main ingredients for an added nutritional boost. This will create a colorful medley that will not only look appealing but also taste divine.
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Cheese Alternatives: For a unique flavor, try mozzarella or fontina cheese in place of parmesan. These cheeses melt beautifully and can create a gooey top layer that the whole family will love.
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Spicy Kick: If you enjoy a bit of heat, add crushed red pepper flakes or a dash of cayenne pepper into your seasoning mix. This adjustment will turn your cozy bake into a fiery family favorite.
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Garlic Lover’s Version: Increase the garlic to 2 tablespoons or add garlic powder along with fresh garlic for passionate garlic lovers. The extra flavor will deepen the overall tastiness and allure of your bake.
If you’re looking for other enticing options, consider making a comforting Hot Honey Chicken or a satisfying Low Carb Chicken dish next!
What to Serve with One-Pan Roasted Chicken Leek and Butternut Squash Bake
Indulging in this warm, hearty bake opens the door to endless delicious pairings that elevate your dining experience.
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Crusty Bread: This classic companion is perfect for soaking up all those savory juices, adding a warm, satisfying crunch to your meal.
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Simple Green Salad: A fresh salad with mixed greens and a light vinaigrette provides a refreshing contrast, balancing the rich flavors of the bake beautifully.
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Garlic Roasted Potatoes: These crispy potatoes with a hint of garlic add a delightful crunch while complementing the softness of the chicken and veggies.
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Honey Glazed Carrots: Sweet, caramelized carrots introduce a delightful pop of color and flavor that harmonizes with the sweeter notes of butternut squash.
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Herbed Quinoa: This fluffy side dish, seasoned with fresh herbs, offers a protein-rich option and a nutty texture that pairs well with the tender chicken.
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Warm Apple Crisp: For a sweet ending, this dessert brings warmth and cozy fall flavors, echoing the comfort food vibe of the bake.
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Sparkling Apple Cider: This refreshing drink captures the essence of autumn and adds a festive flair to your meal, making it even more special.
How to Store and Freeze Roasted Chicken Leek and Butternut Squash Bake
Fridge: Store leftovers in an airtight container for up to 4 days. The flavors of this roasted chicken leek and butternut squash bake improve after a day, making it even more delightful!
Freezer: Portion the bake into single-serving containers and freeze for up to 3 months. This make-ahead convenience allows you to have a cozy meal ready at any time.
Reheating: To enjoy, simply thaw overnight in the fridge and reheat in the oven at 180°C (350°F) until warmed through, about 20 minutes. Avoid microwave reheating to maintain the crispy texture.

Roasted Chicken Leek and Butternut Squash Bake Recipe FAQs
How do I select ripe butternut squash?
When choosing butternut squash, look for ones with a uniform tan color and a firm skin; avoid those with soft spots or blemishes. The stem should be intact and dry, indicating freshness.
What’s the best way to store leftovers?
Store your Roasted Chicken Leek and Butternut Squash Bake in an airtight container in the fridge for up to 4 days. To enhance flavor, I recommend letting it sit for a day before enjoying—it’s when those delicious tastes meld together beautifully!
Can this dish be frozen?
Absolutely! Portion your baked dish into single-serving containers and freeze for up to 3 months. Simply thaw overnight in the fridge before reheating. When you’re ready to enjoy, warm it in an oven at 180°C (350°F) for about 20 minutes to maintain that lovely crispy texture.
What if my chicken thighs aren’t browning properly?
If your chicken thighs aren’t browning, it could be due to crowding in the pan or the heat not being high enough. Always make sure there’s enough space between the pieces and preheat the pan adequately. For even browning, don’t rush it—allow them to sear without moving them too much initially.
Are there any dietary considerations I should be aware of?
Yes! If you’re cooking for those with dietary concerns, this recipe is gluten-free as it doesn’t use any flour. For dairy sensitivities, you can skip the parmesan or use a dairy-free alternative. Always ensure that all chicken is fully cooked, reaching an internal temperature of 165°F for safety.
Can pets enjoy leftovers?
While this dish is predominantly safe for pets, ensure that all seasonings, especially garlic, are minimal as they can upset some animals. Always consult your vet before sharing any human food with your furry friends!

Cozy Roasted Chicken Leek and Butternut Squash Bake Delight
Ingredients
Equipment
Method
- Preheat the oven to 180°C fan (200°C/400°F/Gas Mark 6).
- Cut the chicken thighs into thirds and season with salt, pepper, parsley, and thyme. Sear in a heated pan with salted butter for 5-7 minutes until golden brown.
- Melt the remaining butter and sauté onions and butternut squash with paprika for 8-10 minutes. Deglaze with chicken broth.
- Add leeks and garlic to the pan and cook for another 5 minutes until leeks are tender.
- Transfer the sautéed vegetables to an ovenproof dish and layer the seared chicken on top.
- Pour remaining chicken broth over and sprinkle parmesan cheese on top.
- Cover with foil and bake for 15 minutes then remove foil and bake an additional 15 minutes until chicken is cooked through.
- Garnish with parsley before serving.

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