Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner is a deliciously comforting meal that combines succulent chicken, sweet butternut squash, and savory leeks in a creamy sauce. This dish is perfect for family gatherings or as a hearty weeknight dinner. Its one-pan preparation makes cleanup easy, allowing you to enjoy more time with loved ones.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Main Dish
- For the Sauce
- Optional Topping
- How to Make Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Step 1: Preheat the Oven
- Step 2: Cook the Chicken
- Step 3: Sauté the Vegetables
- Step 4: Add Butternut Squash
- Step 5: Combine Ingredients
- Step 6: Transfer to Baking Dish
- Step 7: Bake
- Step 8: Serve
- How to Serve Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- With Fresh Herbs
- Accompanying Salad
- Crusty Bread
- Seasonal Vegetables
- How to Perfect Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Best Side Dishes for Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Reheating Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Frequently Asked Questions
- What can I substitute for heavy cream in Chicken Leek and Butternut Squash Bake?
- Can I use different vegetables in this bake?
- How long does Chicken Leek and Butternut Squash Bake last in the fridge?
- Is Chicken Leek and Butternut Squash Bake suitable for meal prep?
- Can I make this recipe ahead of time?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Easy to Prepare: With simple steps and minimal ingredients, this dish comes together quickly.
- Flavorful Combination: The blend of chicken, butternut squash, and leeks creates a delightful taste experience.
- Versatile Meal: It’s perfect for any occasion—weeknight dinners, potlucks, or meal prep.
- Nourishing Ingredients: Packed with protein and vitamins, it’s a wholesome choice for the whole family.
- Comforting Texture: The creamy sauce with cheesy topping adds a comforting touch to every bite.
Tools and Preparation
To make the Chicken Leek and Butternut Squash Bake seamlessly, having the right tools can make all the difference. Here’s what you’ll need:
Essential Tools and Equipment
- Skillet
- Baking dish
- Knife
- Cutting board
- Measuring cups and spoons
Importance of Each Tool
- Skillet: Ideal for sautéing chicken and vegetables evenly.
- Baking dish: Ensures all ingredients cook thoroughly while making serving easy.
- Knife: A sharp knife helps in quick and precise chopping of ingredients.
- Cutting board: Provides a safe surface for chopping without damaging your countertops.

Ingredients
For this delightful Chicken Leek and Butternut Squash Bake, gather the following ingredients:
For the Main Dish
- 1 tbsp olive oil
- 1 lb chicken breast, diced
- 2 cups butternut squash, peeled and cubed
- 2 large leeks, cleaned and sliced
- 2 cloves garlic, minced
- 1 tsp thyme (fresh or dried)
- Salt and pepper, to taste
For the Sauce
- 1/2 cup chicken broth
- 1/2 cup heavy cream or crème fraîche
- 1/2 cup grated Parmesan cheese
- 1/4 tsp ground nutmeg
Optional Topping
- 1/2 cup breadcrumbs (optional)
- Cooking spray or butter for greasing
How to Make Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease your baking dish with cooking spray or butter.
Step 2: Cook the Chicken
In a skillet over medium heat:
1. Heat the olive oil.
2. Add the diced chicken, seasoning it with salt and pepper.
3. Cook until the chicken is no longer pink. Remove from heat and set aside.
Step 3: Sauté the Vegetables
In the same skillet:
1. Add the sliced leeks.
2. Sauté for about 5 minutes until softened.
3. Stir in minced garlic and thyme; cook for an additional minute.
Step 4: Add Butternut Squash
Add the cubed butternut squash to the skillet:
1. Cook for about 5 minutes until slightly golden.
Step 5: Combine Ingredients
Return the cooked chicken to the skillet:
1. Stir in chicken broth, heavy cream (or crème fraîche), nutmeg, and half of the grated Parmesan cheese.
2. Simmer everything together for 2–3 minutes.
Step 6: Transfer to Baking Dish
Pour all contents into your prepared baking dish:
1. Top with remaining Parmesan cheese and breadcrumbs if using.
Step 7: Bake
Place in preheated oven:
1. Bake for 25–30 minutes until golden brown on top.
Step 8: Serve
Let rest for about 5 minutes before serving to allow flavors to meld beautifully. Enjoy your delicious Chicken Leek and Butternut Squash Bake!
How to Serve Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
Serving Chicken Leek and Butternut Squash Bake is easy and enjoyable. This dish is not only delicious but also visually appealing, making it perfect for family dinners or gatherings. Here are some great serving suggestions.
With Fresh Herbs
- Chopped Parsley – Sprinkle fresh parsley on top just before serving for a burst of color and flavor.
- Thyme Sprigs – Add a few sprigs of thyme for an aromatic touch that pairs well with the dish.
Accompanying Salad
- Mixed Green Salad – A light salad with mixed greens, cherry tomatoes, and a simple vinaigrette complements the richness of the bake.
- Caesar Salad – The crunch of romaine and creamy dressing provides a nice contrast to the creamy chicken bake.
Crusty Bread
- Baguette Slices – Serve warm slices of baguette for soaking up the creamy sauce.
- Garlic Bread – Garlic-infused bread adds an extra layer of flavor that pairs beautifully with this dish.
Seasonal Vegetables
- Roasted Brussels Sprouts – These add a delightful crunch and earthy flavor to your meal.
- Steamed Green Beans – Lightly steamed green beans offer a fresh taste that balances the rich bake.
How to Perfect Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
To ensure your Chicken Leek and Butternut Squash Bake turns out perfectly every time, consider these helpful tips.
- Use Fresh Ingredients – Fresh leeks and butternut squash enhance the flavor and texture of the dish.
- Cut Evenly – Chop chicken and vegetables into similar sizes for even cooking throughout the bake.
- Adjust Seasoning – Taste as you go! Adjust salt, pepper, or herbs according to your preference for optimal flavor.
- Don’t Overcook – Keep an eye on the bake to prevent overcooking; it should be golden brown on top yet creamy inside.
- Rest Before Serving – Allowing the dish to rest for 5 minutes helps flavors meld together and makes serving easier.
- Experiment with Cheese – Try different cheeses like cheddar or Gruyère for varied tastes and textures.
Best Side Dishes for Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
Pairing side dishes with Chicken Leek and Butternut Squash Bake enhances your dining experience. Here are some excellent options.
- Garlic Mashed Potatoes – Creamy mashed potatoes infused with garlic provide a comforting addition.
- Quinoa Salad – A refreshing quinoa salad with vegetables can add a healthy twist to your meal.
- Roasted Carrots – Sweet roasted carrots bring natural sweetness that complements the savory bake.
- Couscous with Herbs – Fluffy couscous tossed with fresh herbs offers a light, fragrant side.
- Sautéed Spinach – Quick sautéed spinach adds vibrant color and nutrients to balance the rich flavors of the main dish.
- Coleslaw – A tangy coleslaw can provide a crunchy contrast to the creamy texture of the bake.
Common Mistakes to Avoid
When preparing Chicken Leek and Butternut Squash Bake, it’s easy to make a few common mistakes that can affect the final dish.
Ignoring ingredient prep: Failing to prepare your vegetables properly can lead to uneven cooking. Make sure leeks are thoroughly cleaned and butternut squash is evenly cubed for consistent baking.
Overcrowding the pan: If you place too much in the baking dish, it may not cook evenly. Use a larger dish if needed or bake in batches to ensure everything cooks well.
Skipping seasoning: Neglecting to season your chicken and vegetables properly can result in bland flavors. Always taste as you go and adjust seasoning accordingly.
Not allowing resting time: Cutting into the bake immediately after removing it from the oven can cause it to lose creaminess. Let it rest for a few minutes to set before serving.
Using cold ingredients: Adding cold chicken or cream directly into the baking dish can lower the overall cooking temperature. Ensure all ingredients are at room temperature before combining.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftovers in an airtight container.
- Consume within 3-4 days for best quality.
- Allow the dish to cool completely before sealing.
Freezing Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Freeze in a freezer-safe container or wrap portions tightly in plastic wrap.
- Can be frozen for up to 2-3 months.
- Label with the date for reference.
Reheating Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Oven: Preheat to 350°F (175°C) and bake covered with foil for about 20-25 minutes until heated through.
- Microwave: Place a portion in a microwave-safe dish, cover, and heat on medium power for 2-3 minutes or until hot.
- Stovetop: Heat gently in a skillet over low heat, stirring occasionally until warmed through.
Frequently Asked Questions
Here are some common questions about Chicken Leek and Butternut Squash Bake that might help you while preparing this delicious dish.
What can I substitute for heavy cream in Chicken Leek and Butternut Squash Bake?
You can use plant-based creams like coconut cream or cashew cream as alternatives. They will provide a creamy texture without dairy.
Can I use different vegetables in this bake?
Absolutely! Feel free to mix in other vegetables like carrots or spinach based on your preference or what you have on hand.
How long does Chicken Leek and Butternut Squash Bake last in the fridge?
This dish stays fresh in the refrigerator for about 3-4 days when stored properly in an airtight container.
Is Chicken Leek and Butternut Squash Bake suitable for meal prep?
Yes! It’s an excellent candidate for meal prep as it reheats well, making it perfect for easy lunches or dinners throughout the week.
Can I make this recipe ahead of time?
Definitely! You can prepare it up until baking, cover it, and store it in the fridge overnight. Just add a few extra minutes to the baking time if it’s cold from the fridge.
Final Thoughts
Chicken Leek and Butternut Squash Bake is not just comforting; it’s also versatile. You can customize it with different veggies or spices according to your taste preferences. This recipe is perfect for family dinners or meal prepping for busy weeks ahead. Give it a try, and enjoy every bite!
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Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Total Time: 45 minutes
- Yield: Serves 6
Description
Savor the comforting flavors of Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner. This creamy casserole brings together tender chicken, sweet butternut squash, and aromatic leeks, all enveloped in a rich sauce that will please every palate. Perfect for family gatherings or busy weeknights, this easy dish requires minimal clean-up thanks to its one-pan preparation. Enjoy a wholesome meal that’s not only delicious but also packed with nutrients, making it an ideal choice for any occasion.
Ingredients
- 1 tbsp olive oil
- 1 lb chicken breast, diced
- 2 cups butternut squash, peeled and cubed
- 2 large leeks, cleaned and sliced
- 2 cloves garlic, minced
- 1 tsp thyme (fresh or dried)
- Salt and pepper, to taste
- 1/2 cup chicken broth
- 1/2 cup heavy cream or crème fraîche
- 1/2 cup grated Parmesan cheese
- 1/4 tsp ground nutmeg
- 1/2 cup breadcrumbs (optional)
- Cooking spray or butter for greasing
Instructions
- Preheat your oven to 375°F (190°C) and grease a baking dish.
- In a skillet over medium heat, heat olive oil and cook diced chicken until no longer pink; set aside.
- In the same skillet, sauté sliced leeks for 5 minutes, then add minced garlic and thyme.
- Stir in cubed butternut squash and cook until slightly golden.
- Return chicken to the skillet, adding chicken broth, heavy cream, nutmeg, and half of the Parmesan cheese; simmer for 2-3 minutes.
- Transfer everything into the baking dish, top with remaining cheese and breadcrumbs if desired.
- Bake for 25–30 minutes until golden brown on top.
- Let rest for 5 minutes before serving.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 410
- Sugar: 4g
- Sodium: 650mg
- Fat: 22g
- Saturated Fat: 10g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 28g
- Fiber: 4g
- Protein: 26g
- Cholesterol: 95mg





