As the autumn leaves crunch underfoot, I find myself craving the warm embrace of comfort food. There’s something magical about cozying up with a One-Pan Roasted Chicken Leek and Butternut Squash Bake, a dish that brings together tender chicken thighs, sweet butternut squash, and mild leeks in perfect harmony. Not only is this recipe a delightful family dinner, but it also simplifies cleanup, making it a cornerstone for those hectic weeknights. Plus, it’s gluten-free adaptable, which means everyone can join in on the fun. So, are you ready to fill your home with an inviting aroma and give your dining table a hearty upgrade? Let’s dive in!

Why Is This Dish a Must-Try?
Simplicity at its finest: With just one pan needed, cooking and cleanup become effortless, letting you focus on what really matters—enjoying the meal with loved ones.
Flavorful comfort: Each bite delivers the harmony of tender chicken, sweet butternut squash, and aromatic leeks, creating a homey dish that’s perfect for any gathering.
Versatility is key: Feel free to swap out chicken thighs for breasts or experiment with seasonal vegetables, allowing creativity in the kitchen. Consider pairing it with a light salad or some crusty bread for the ultimate experience.
Time-saving option: This recipe is ready in under an hour, making it an ideal choice for those busy weeknights when you still want a home-cooked meal.
Crowd-pleaser appeal: Whether it’s a family dinner or a cozy gathering with friends, this hearty bake will wow everyone at the table, ensuring there are no leftovers!
Roasted Chicken Leek and Butternut Squash Bake Ingredients
• For the Chicken
- Boneless Skinless Chicken Thighs – Juicy and flavorful; substitute with chicken breasts for a leaner option.
- Low-Calorie Oil Spray – Keeps the dish light; can be replaced with olive oil or butter for richness.
• For the Vegetables
- Yellow Onion – Adds depth and sweetness; shallots can be a fine alternative.
- Butternut Squash – Sweet and tender; feels free to swap with sweet potatoes or root vegetables for variety.
- Leeks – Provide a mild onion flavor; green onions or shallots work in a pinch.
- Paprika – Adds smokiness and vibrant color; smoked paprika enhances the flavor further.
- Minced Garlic – Elevates the dish’s aroma; use garlic powder if fresh is unavailable.
• For the Seasoning
- Dried Thyme – Infuses earthy notes; fresh thyme can substitute beautifully.
- Salt & Ground Black Pepper – Essential for flavor; adjust to your personal taste.
• For the Cooking Liquid
- Chicken Broth – Moistens and flavors the dish; consider vegetable broth for a vegan-friendly alternative.
• For Baking
- Salted Butter (or Olive Oil) – Adds richness; unsalted butter or any cooking oil are suitable substitutes.
- Freshly Grated Parmesan Cheese – Creates a beautiful golden-brown topping; use nutritional yeast for a dairy-free option.
• For Garnish
- Fresh Parsley Leaves – Adds a pop of color and freshness; optional but highly recommended.
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 ensures the oven is hot enough to achieve that lovely golden crust on the Roasted Chicken Leek and Butternut Squash Bake. While the oven heats, prepare your ingredients so that everything is ready for a smooth cooking process.
Step 2: Prepare the Chicken Thighs
Next, take your boneless skinless chicken thighs and cut them into thirds. This will allow them to cook evenly and absorb the flavors from the vegetables. Once cut, set them aside while you prepare to sear them for that beautifully golden appearance.
Step 3: Sear the Chicken
In a frying pan over medium-high heat, spray a little low-calorie oil and add the chicken pieces. Sear them for about 4-5 minutes on each side until they’re golden brown. This step is crucial for enhancing the flavor of the Roasted Chicken Leek and Butternut Squash Bake, so don’t rush it! Once done, transfer them to a plate and set aside.
Step 4: Sauté the Vegetables
In the same frying pan, melt a tablespoon of butter over medium heat, and add the diced onion, butternut squash, and a sprinkle of paprika. Cook for around 5-7 minutes, stirring occasionally, until the vegetables soften and the onion becomes translucent. This will create a fragrant base for your bake.
Step 5: Deglaze the Pan
Now it’s time to add depth to your dish! Pour in about a cup of chicken broth to deglaze the pan, scraping up any flavorful bits stuck to the bottom. Then, toss in the leeks and minced garlic, cooking for an additional 3-4 minutes until the leeks are tender. This mixture will serve as a delicious bed for the chicken in your bake.
Step 6: Assemble the Bake
Transfer the sautéed vegetable mixture into a large ovenproof dish, spreading it evenly. Layer the seared chicken on top of the vegetables, then drizzle any remaining juices and broth from the frying pan over everything. This ensures that the chicken stays moist and flavorful throughout the baking process.
Step 7: Bake Covered
Sprinkle the freshly grated Parmesan cheese over the chicken and then cover the dish tightly with aluminum foil. Place it in the preheated oven and bake for 15 minutes. This initial baking phase helps steam the chicken and vegetables, enhancing the overall tenderness.
Step 8: Bake Uncovered
After 15 minutes, carefully remove the foil and bake for an additional 15 minutes, allowing the cheese to melt and get a lovely golden brown color. If you desire an extra crisp on the top, consider broiling it for an additional 2-3 minutes, watching closely to avoid burning.
Step 9: Serve and Garnish
Once your Roasted Chicken Leek and Butternut Squash Bake is beautifully golden and cooked through, season it with salt and freshly ground black pepper to taste. Finish with a sprinkle of fresh parsley for garnish, adding a vibrant touch to your dish before serving it warm to your family.

Expert Tips for Roasted Chicken Leek and Butternut Squash Bake
- Perfectly Cut Squash: Ensure butternut squash is cut into 1-inch cubes for even cooking and caramelization.
- Avoid Overcrowding: Do not overcrowd the baking dish; this allows proper browning of the chicken and vegetables, ensuring a tastier bake.
- Brown for Flavor: Always brown the chicken thighs first. This step enhances the overall flavor of your Roasted Chicken Leek and Butternut Squash Bake and prevents rubberiness.
- Cheese Timing: Add parmesan cheese during the last 15-20 minutes of baking to prevent burning while still achieving that golden, bubbling top.
- Temperature Check: Always check that the chicken’s internal temperature reaches 165°F before serving to ensure it’s safely cooked through.
Make Ahead Options
These Roasted Chicken Leek and Butternut Squash Bake preparations are perfect for busy weeknights, allowing you to save precious time! You can chop your vegetables and season the chicken up to 24 hours in advance, storing them in the refrigerator to maintain freshness. Additionally, you can fully assemble the bake without baking it, cover it tightly, and refrigerate for up to 3 days. When you’re ready to enjoy, preheat your oven and bake it directly from the fridge; you may need to add 5-10 minutes to the cooking time to ensure the dish heats evenly. This way, you can whip up a comforting meal that tastes just as delicious as if you made it fresh that day!
Variations & Substitutions for Roasted Chicken Leek and Butternut Squash Bake
Feel free to get creative and tailor this recipe to your taste; the options are delightful and endless!
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Chicken Breasts: Swap chicken thighs for breasts for a leaner option, but be mindful as they can dry out faster.
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Root Veggies: Use seasonal vegetables like carrots or parsnips in place of butternut squash for a unique flavor twist that still maintains that comforting essence.
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Herb Boost: Add fresh herbs like rosemary or sage alongside thyme for an aromatic depth that’ll elevate your dish even further.
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Spice It Up: Introduce spices like cumin or coriander to add a warm, earthy flavor profile that complements the sweetness of the squash beautifully.
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Cheese Options: For a dairy-free twist, switch out parmesan cheese for nutritional yeast or a vegan cheese alternative, ensuring everyone can enjoy this dish.
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Broth Swap: Use vegetable broth instead of chicken broth for a vegetarian-friendly version while keeping all the flavor intact.
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Oil Substitute: Opt for coconut oil or avocado oil in place of butter for a different taste and healthy fat content.
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Garlic Level: If you’re a garlic lover, double the minced garlic or use roasted garlic for a sweeter, caramelized note that enhances the overall flavor.
By playing around with these variations, you create a dish that feels distinctly yours! Also, if you’re in the mood for more comforting variations, you might want to check out my other recipes like Autumn Butternut Squash or a savory Chicken Zucchini Bake that will surely tickle your taste buds!
What to Serve with Roasted Chicken Leek and Butternut Squash Bake
This hearty, flavorful dish deserves delightful companions that elevate your dining experience, creating a fulfilling meal that warms the soul.
- Creamy Mashed Potatoes: Velvety and comforting, these mashed potatoes soak up all the delicious juices from the bake for an irresistible blend of flavors.
- Garlic Bread: Crunchy with a buttery garlic spread, this bread complements the tender chicken and offers a satisfying contrast in texture.
- Mixed Green Salad: A fresh salad with light vinaigrette adds crispness, balancing the dish’s richness while brightening the meal with vibrant flavors.
- Roasted Brussels Sprouts: Crispy and nutty, these roasted greens amplify the autumnal theme, enhancing the dish with their roasted depth.
- Cranberry Sauce: A touch of sweetness and tartness provides a delightful contrast, cutting through the savory notes of the chicken and squash.
- Chardonnay: A glass of chilled Chardonnay pairs beautifully, its bright acidity complementing the dish while enhancing the overall dining experience.
How to Store and Freeze Roasted Chicken Leek and Butternut Squash Bake
- Fridge: Store leftovers in an airtight container for up to 4 days. Letting it rest improves the flavors, making each bite even more delicious.
- Freezer: Portion out the roasted chicken bake into freezer-safe containers, and it can last for up to 3 months. Thaw overnight in the fridge before reheating.
- Reheating: To reheat, place in the oven at 180°C (350°F) for about 20 minutes or until heated through. This will maintain the dish’s comforting texture and flavors.

Roasted Chicken Leek and Butternut Squash Bake Recipe FAQs
What type of butternut squash is best for this recipe?
Absolutely! When selecting butternut squash, look for ones that are firm, with smooth, unblemished skin. Avoid any with dark spots all over, as these could indicate spoilage. Choose a medium-sized squash for the best texture and sweetness; smaller squashes tend to be firmer and sweeter.
How should I store leftovers from the Roasted Chicken Leek and Butternut Squash Bake?
Very good question! Store any leftovers in an airtight container in the fridge, where they can last for up to 4 days. I always find that the flavors improve upon resting, making each bite even more delicious. Just remember to reheat thoroughly before enjoying again!
Can I freeze this chicken bake, and how do I do it?
Certainly! To freeze the Roasted Chicken Leek and Butternut Squash Bake, let it cool completely after cooking. Then, portion it into freezer-safe containers and label them with the date. It can be stored for up to 3 months. When you’re ready to enjoy, simply thaw it overnight in the fridge and reheat in the oven at 180°C (350°F) for about 20 minutes until heated through. This helps keep the dish’s comforting texture intact.
What if I have a garlic allergy; are there any alternatives?
Absolutely! If you’re sensitive to garlic, you can simply omit it from the recipe. For added depth of flavor without using garlic, consider using a little extra onion or shallots, or even a pinch of garlic-infused olive oil for a more subtle hint. Tweaking it this way can still make your Roasted Chicken Leek and Butternut Squash Bake deliciously savory without compromising safety.
How do I prevent the chicken from drying out during cooking?
Great inquiry! To ensure your chicken thighs remain tender and juicy, first, make sure you brown them well in the frying pan before transferring them to the oven. This enhances their flavor and helps seal in moisture. Additionally, avoid overcrowding the baking dish, allowing the heat to circulate evenly, which also prevents the chicken from becoming rubbery. It’s all about stylishly coaxing flavor while keeping thing juicy!

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). Prepare your ingredients for a smooth cooking process.
- Cut boneless skinless chicken thighs into thirds and set aside.
- Sear chicken pieces in a frying pan with low-calorie oil for 4-5 minutes on each side until golden brown, then transfer to a plate.
- In the same frying pan, melt butter, add diced onion, butternut squash, and paprika; cook for 5-7 minutes until softened.
- Deglaze the pan with chicken broth, scrape up flavorful bits, then add leeks and minced garlic; cook for an additional 3-4 minutes.
- Transfer sautéed vegetables into a large ovenproof dish, layer seared chicken on top, and drizzle remaining juices over.
- Sprinkle Parmesan cheese over chicken; cover with aluminum foil and bake for 15 minutes.
- Remove foil and bake for an additional 15 minutes for a golden brown color, optionally broil for 2-3 minutes for extra crisp.
- Season with salt and freshly ground black pepper; garnish with fresh parsley before serving warm.

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