As I stirred the simmering pot, the aroma of sautéed leeks and garlic mingling with the sweet scent of butternut squash wafted through the kitchen, instantly transporting me to a cozy, Autumn-inspired dining experience. This Low-Calorie Chicken, Leek and Butternut Squash Bake not only warms the soul but offers a brilliantly easy solution for weeknight meals. With tender chicken thighs beautifully seasoned and baked to perfection, this dish marries convenience with health-conscious deliciousness—ideal for meal-prepping or simply savoring at the dinner table. Plus, it’s gluten-free, making it a wonderful option for everyone popping by. Are you ready to enjoy a comforting, wholesome dish that brings joy and nourishment to your home?

Why is this bake a must-try?
Comforting Flavors: This Chicken, Leek and Butternut Squash Bake delivers a delightful blend of savory chicken, sweet squash, and buttery leeks that will warm your heart.
Health-Conscious Choice: With low-calorie options and gluten-free ingredients, indulge without the guilt!
Meal Prep Friendly: Perfect for busy weeks, this dish stores well, ensuring you have a wholesome meal ready at your convenience.
Versatile Ingredients: Feel free to switch up the veggies or try different cheeses to suit your taste! If you’re in the mood for something different, check out my Wholesome Baked Oatmeal recipe for a sweet twist.
Family Favorite: This dish is guaranteed to satisfy friends and family alike, making it an instant classic at your dining table. Get ready to impress with a dish everyone will rave about!
Chicken, Leek and Butternut Squash Bake Ingredients
For the Bake
- Low calorie spray – Ideal for frying with less added fat.
- 600g boneless skinless chicken thighs – Main protein source; for a leaner option, chicken breast can be substituted.
- 1 teaspoon dried parsley – Adds a hint of herbal freshness.
- 1/2 teaspoon dried thyme leaves – Enhances the aromatic quality of the dish.
- Salt and black pepper – Essential seasoning to boost flavor.
- 1 tablespoon salted butter (or olive oil) – Provides richness; swap for olive oil for a dairy-free alternative.
- 1 onion, halved and sliced – Brings sweetness and depth of flavor.
- 600g butternut squash, peeled and diced – Adds natural sweetness; fresh is preferred for superior taste.
- 1 teaspoon paprika – Contributes color and a mild, pleasant spice.
- 3 leeks, washed, trimmed, and sliced – Brings a sumptuous buttery flavor and texture.
- 1 tablespoon minced garlic (or 3 crushed cloves) – Elevates the overall flavor profile.
- 1 cup (240ml) chicken stock – Keeps the bake moist; vegetable stock can be used for a vegetarian version.
- 80g freshly grated Parmesan – A savory cheese topping; can be substituted with other melting cheeses for variation.
- Handful fresh parsley, chopped – For garnish; adds a pop of color and freshness to the dish.
Step‑by‑Step Instructions for Chicken, Leek and Butternut Squash Bake
Step 1: Preheat the Oven
Begin by preheating your oven to 180°C (fan), 200°C, or 400°F (gas mark 6). This initial step is crucial as it prepares the perfect environment for your Chicken, Leek and Butternut Squash Bake to cook evenly and develop a lovely golden crust.
Step 2: Prepare the Chicken
Trim your boneless, skinless chicken thighs into thirds for bite-sized pieces. Using a sharp knife will make this task easier and safer. Once ready, set aside the chicken to marinate in a sprinkle of dried thyme, parsley, salt, and black pepper while you work on the vegetables, allowing those flavors to meld.
Step 3: Sauté the Chicken
In a large frying pan, spray with low-calorie spray and heat over medium-high. Add the seasoned chicken pieces, frying them for about 5-7 minutes until they are lightly golden and just cooked through. Stir frequently for even browning, then remove the chicken from the pan and set it aside to prevent overcooking.
Step 4: Cook the Vegetables
Using the same frying pan, melt 1 tablespoon of salted butter or olive oil over medium heat. Add the halved and sliced onion, diced butternut squash, and 1 teaspoon of paprika. Sauté these ingredients for 8-10 minutes until the squash begins to soften, scraping any tasty bits off the bottom of the pan with a wooden spoon.
Step 5: Add Leeks and Garlic
Once your butternut squash has started to soften, stir in the sliced leeks and minced garlic. Continue to cook for another 5-8 minutes, until the leeks are soft and golden, stirring occasionally. The delightful aroma will fill your kitchen, setting the stage for your Chicken, Leek and Butternut Squash Bake.
Step 6: Layer the Bake
With the vegetable mixture beautifully cooked, it’s time to assemble the bake. In an ovenproof dish, layer the sautéed onion, squash, and leek mixture evenly on the bottom. Place the golden chicken on top of the vegetables, making sure to pour any leftover juices from the pan over the chicken for added flavor.
Step 7: Add Stock and Cheese
Pour 1 cup (240ml) of chicken stock over the prepared layers in the dish, ensuring everything is coated and has moisture to bake. Finally, sprinkle the freshly grated Parmesan cheese evenly over the top, creating a cheesy layer that will melt beautifully during baking, adding to the dish’s comforting appeal.
Step 8: Bake the Dish
Cover your Chicken, Leek and Butternut Squash Bake with aluminum foil to keep moisture in. Bake in the preheated oven for 15 minutes, then remove the foil and continue baking for another 15 minutes, or until the dish is golden brown and bubbling. You’ll know it’s ready when the cheese is melted and the ingredients are tender.
Step 9: Final Seasoning and Garnish
Once baked, carefully remove the dish from the oven and let it sit for a few minutes. Season the top with salt and pepper to taste, then garnish with freshly chopped parsley for a pop of color. This step enhances the presentation and adds a touch of freshness to the comforting Chicken, Leek and Butternut Squash Bake.

Make Ahead Options
These Chicken, Leek and Butternut Squash Bake is an ideal solution for busy weeknights! You can prepare the entire dish up to 24 hours in advance by following the first seven steps, then cover and refrigerate it until you’re ready to bake. To maintain quality, ensure it’s tightly sealed to prevent drying out; you can even sprinkle a bit of extra stock just before baking to enhance moisture. When you’re ready to enjoy, simply preheat the oven and bake for about 30-35 minutes in a preheated oven set to 180°C (fan) or 200°C (gas mark 6), ensuring it’s heated through and the cheese is golden and bubbling. This prep-ahead method gives you restaurant-quality results with minimal effort!
Expert Tips for Chicken, Leek and Butternut Squash Bake
- Sharp Tools: Always use a sharp knife for chopping butternut squash to make the task easier and safer. A dull knife can be frustrating and dangerous.
- Choose the Right Dish: Ensure your baking dish fits the ingredient quantity properly to avoid overcrowding, which can lead to uneven cooking.
- Cheese Matters: Opt for freshly grated Parmesan instead of pre-packaged cheese for enhanced melting and flavor. Pre-packaged varieties often include anti-caking agents.
- Moist Chicken: If substituting chicken thighs for breasts, consider marinating the chicken beforehand to ensure flavor and moisture retention in your Chicken, Leek and Butternut Squash Bake.
- Reheat with Care: For the best reheating results, thaw the dish before serving and gently heat it in a preheated oven to maintain texture and flavor.
What to Serve With Chicken, Leek and Butternut Squash Bake
Pairing this delightful bake with complementary sides enhances your meal, creating a cozy dining experience everyone will cherish.
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Creamy Mashed Potatoes: The velvety texture of mashed potatoes makes them a classic companion, soaking up the savory sauce from the bake.
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Grilled Asparagus: These tender spears add a fresh, crunchy element, providing a delightful contrast to the rich flavors of the casserole. Toss with olive oil and a sprinkle of salt for a simple yet elegant side.
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Roasted Cauliflower: With its nutty flavors and golden edges, roasted cauliflower complements the dish beautifully and offers a satisfying bite. It’s an excellent low-carb option too!
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Garlic Bread: Warm, crusty bread brushed with garlic butter is perfect for soaking up every delicious drop of sauce. It’s a favorite in many households!
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Simple Green Salad: A light salad paired with a tangy vinaigrette brings brightness to the meal, balancing the richness of the bake. Fresh greens will refresh your palate!
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Crisp White Wine: A chilled glass of Sauvignon Blanc enhances the dish’s flavors, making it a perfect drink for a cozy dinner or gathering with friends.
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Apple Crisp: Sweet-tart slices of baked apples topped with a crunchy crumb make for a delightful dessert, finishing your meal on a light and fruity note.
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Steamed Broccoli: Add a pop of color and a nutrition boost with tender-crisp broccoli. Its natural bitterness helps to balance the creamy richness of the bake.
How to Store and Freeze Chicken, Leek and Butternut Squash Bake
Fridge: Store your Chicken, Leek and Butternut Squash Bake in an airtight container for up to 3 days. Reheat gently in the microwave or a preheated oven to maintain the dish’s creamy texture.
Freezer: This bake freezes well! Portion it out in freezer-safe containers for easy meals later. It can stay frozen for up to 3 months. Thaw overnight in the fridge before reheating.
Reheating: For best results, reheat in a preheated oven at 350°F (175°C) for about 20-25 minutes, ensuring it’s warmed through and the cheese is melty.
Wrap It Up: If storing in the fridge or freezer, ensure it’s wrapped well or sealed in an airtight container to prevent freezer burn and to keep flavors intact.
Chicken, Leek and Butternut Squash Bake Variations
Feel free to adjust this delicious recipe to suit your preferences or dietary needs!
- Leaner Protein: Swap chicken thighs for boneless chicken breasts or turkey to create a lighter version that remains full of flavor.
- Sweet Swap: Replace butternut squash with sweet potato or carrots to introduce a delightful twist that brings a new layer of sweetness.
- Cheesy Alternatives: Experiment with different cheese varieties like gouda or smoked cheddar for a unique flavor boost that elevates the dish.
- Green Goodness: Incorporate leafy greens such as spinach or kale for an added nutritional punch and vibrant color that brightens up each serving.
- Spice It Up: Add a pinch of red pepper flakes or a diced jalapeño to introduce heat and excitement that complements the savory ingredients beautifully.
- Herbal Twist: Fresh herbs like thyme or rosemary can be substituted for dried herbs, giving your bake a vibrant and fragrant freshness.
- Crispy Topping: Top off with breadcrumbs or crushed nuts before baking for a crunchy texture that contrasts wonderfully with the creamy layers.
- One-Pot Wonder: For an easy clean-up, consider transforming this into a one-pan dish by cooking everything together on the stovetop before finishing in the oven, similar to a Shrimp Corn Soup but with a delightful autumn twist!
Feel free to mix and match any of these ideas as you create your ideal Chicken, Leek and Butternut Squash Bake!

Chicken, Leek and Butternut Squash Bake Recipe FAQs
What kind of chicken is best for this recipe?
For the Chicken, Leek and Butternut Squash Bake, I recommend using boneless, skinless chicken thighs as they are tender and flavorful. However, if you prefer a leaner option, chicken breasts can be substituted, keeping in mind that they may result in a drier texture. Marinating them beforehand can help retain moisture.
How should I store leftovers?
Store your Chicken, Leek and Butternut Squash Bake in an airtight container in the fridge for up to 3 days. When you’re ready to enjoy it again, reheat gently in the microwave or a preheated oven at 350°F (175°C) to maintain the dish’s creamy texture and flavor.
Can I freeze this dish?
Absolutely! This bake freezes wonderfully. Portion it out in freezer-safe containers, and it can be frozen for up to 3 months. When you’re ready to enjoy it, simply thaw it overnight in the fridge, then reheat in a preheated oven at 350°F (175°C) for about 20-25 minutes, ensuring it’s heated all the way through.
What if my butternut squash is too hard to peel?
No worries—this is a common issue! For easier peeling, try microwaving the whole butternut squash for about 2-3 minutes before cutting into it. This will soften the skin slightly and make it much easier to peel. Always use a sharp knife for chopping, as dull knives can be less safe.
Are there any dietary considerations I should keep in mind?
This Chicken, Leek and Butternut Squash Bake is gluten-free, making it a wonderful option for those with gluten sensitivities. If you’re cooking for someone with dairy allergies, you can substitute the butter with olive oil and use a dairy-free cheese. Always double-check ingredient labels if you’re serving someone with specific dietary restrictions.
How do I know when the bake is done?
For a perfectly cooked Chicken, Leek and Butternut Squash Bake, look for a golden-brown cheese topping and ensure the chicken is cooked through. Inserting a meat thermometer into the chicken should read at least 165°F (75°C). The squash and leeks should be tender and bubbling. Enjoy the comforting aroma and the delightful presentation, knowing your efforts have culminated in a heartwarming dish!

Savory Chicken, Leek and Butternut Squash Bake Delight
Ingredients
Equipment
Method
- Preheat your oven to 180°C (fan), 200°C, or 400°F (gas mark 6).
- Trim your chicken thighs into thirds and set aside to marinate with thyme, parsley, salt, and pepper.
- In a large frying pan, spray with low-calorie spray and sauté the chicken for 5-7 minutes until golden.
- In the same pan, melt butter or olive oil over medium heat. Add onion, butternut squash, and paprika. Sauté for 8-10 minutes.
- Add leeks and garlic, cooking for another 5-8 minutes until leeks are soft.
- Layer the vegetable mixture in an ovenproof dish and place the chicken on top, pouring any juices over.
- Pour chicken stock over, then sprinkle Parmesan evenly on top.
- Cover with aluminum foil and bake for 15 minutes. Remove foil and bake for another 15 minutes until golden.
- Let it sit for a few minutes, season with salt and pepper, and garnish with parsley before serving.

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