Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner is a delightful dish that brings together tender chicken, sweet butternut squash, and delicate leeks in a creamy sauce. This recipe is perfect for various occasions, from cozy family dinners to meal prep for the week ahead. The combination of flavors and textures makes it a standout choice that everyone will love.
Why You’ll Love This Recipe
- Easy to Prepare: With just one pan needed, cleanup is a breeze!
- Comforting Flavor: The creamy sauce combined with the sweetness of butternut squash creates a warm, inviting dish.
- Versatile Ingredients: This recipe allows for substitutions based on what you have on hand, making it adaptable.
- Nutritious: Packed with protein and vegetables, this meal is both filling and healthy.
- Perfect for Meal Prep: Make it ahead of time and enjoy delicious leftovers throughout the week.
Tools and Preparation
To create this amazing Chicken Leek and Butternut Squash Bake, you’ll need some essential tools to make your cooking experience smooth and efficient.
Essential Tools and Equipment
- Skillet
- Baking dish
- Knife
- Cutting board
- Measuring cups
Importance of Each Tool
- Skillet: Ideal for sautéing the chicken and vegetables evenly, enhancing flavor development.
- Baking dish: Perfectly sized to hold all ingredients while allowing for even baking.
- Knife: A sharp knife makes chopping leeks and butternut squash quick and safe.
- Cutting board: Provides a stable surface for food preparation, ensuring cleanliness in your kitchen.

Ingredients
To make the Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner, gather the following ingredients:
For the Bake
- 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
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) while you prepare the other ingredients. 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 until shimmering.
2. Add the diced chicken breast.
3. Season with salt and pepper.
4. Cook until no longer pink in the center (about 5–7 minutes).
5. Remove cooked chicken from skillet and set aside.
Step 3: Sauté the Vegetables
In the same skillet:
1. Add sliced leeks.
2. Sauté for about 5 minutes until softened.
3. Stir in minced garlic and thyme; cook for another minute.
Step 4: Add Butternut Squash
Add cubed butternut squash to the skillet:
1. Cook for an additional 5 minutes until slightly golden.
Step 5: Combine Ingredients
Return cooked chicken to the skillet:
1. Stir in chicken broth, heavy cream or crème fraîche, ground nutmeg, and half of the grated Parmesan cheese.
2. Simmer everything together for 2–3 minutes.
Step 6: Assemble in Baking Dish
Transfer everything from the skillet into your prepared baking dish:
1. Top with remaining grated Parmesan cheese.
2. If desired, sprinkle breadcrumbs on top for extra crunch.
Step 7: Bake It!
Place in preheated oven:
1. Bake for 25–30 minutes until the top is golden brown and bubbly.
Step 8: Serve
Once done, 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
This delightful Chicken Leek and Butternut Squash Bake is not only a hearty meal on its own but can also be paired with various accompaniments to enhance your dining experience. Here are some creative serving suggestions.
With a Fresh Salad
- Mixed Greens Salad: A light salad with arugula, spinach, and cherry tomatoes drizzled with a lemon vinaigrette adds freshness.
- Caesar Salad: Classic romaine lettuce with creamy dressing and croutons complements the rich bake well.
As Part of a Cozy Meal
- Crusty Bread: Serve with warm, crusty bread for dipping into the creamy sauce.
- Garlic Bread: A side of garlic bread brings an irresistible aroma that pairs beautifully with the dish.
For a Comforting Twist
- Mashed Potatoes: Creamy mashed potatoes provide a comforting texture alongside the bake.
- Rice Pilaf: Fluffy rice pilaf infused with herbs makes for a nice textural contrast.
With Seasonal Vegetables
- Roasted Brussels Sprouts: Crispy roasted Brussels sprouts add crunch and flavor, balancing the creaminess of the bake.
- Steamed Broccoli: Lightly steamed broccoli offers a vibrant color and additional nutrients.
How to Perfect Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
Achieving perfection in your Chicken Leek and Butternut Squash Bake is easier than you think. Here are some tips to ensure it turns out delicious every time.
- Use Fresh Ingredients: Fresh leeks and butternut squash enhance the flavor profile significantly.
- Don’t Overcook the Chicken: Cook chicken just until it’s no longer pink to keep it tender and juicy.
- Adjust Creaminess: Feel free to substitute heavy cream with lower-fat options or use plant-based creams for a lighter version.
- Season Generously: Taste as you go! Adjust salt, pepper, and thyme according to your preference for maximum flavor.
- Let It Rest Before Serving: Allowing the dish to rest for 5 minutes before serving helps meld flavors together.
- Experiment with Cheese: Try different cheeses like cheddar or Gruyère for varied taste profiles.
Best Side Dishes for Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
While the Chicken Leek and Butternut Squash Bake is satisfying on its own, pairing it with side dishes can elevate your meal. Here are some great options.
- Garlic Mashed Potatoes: Creamy potatoes mixed with garlic provide comfort that complements the bake perfectly.
- Green Beans Almondine: Sautéed green beans topped with toasted almonds add crunch and elegance to your plate.
- Roasted Root Vegetables: A medley of carrots, parsnips, and sweet potatoes brings sweetness that pairs well with savory flavors.
- Quinoa Salad: A protein-packed quinoa salad mixed with herbs offers a nutritious, wholesome addition.
- Crispy Kale Chips: Lightly salted kale chips add a crunchy texture that’s fun to munch on alongside your bake.
- Herbed Couscous: Fluffy couscous flavored with fresh herbs serves as a light and refreshing side option.
Common Mistakes to Avoid
When preparing your Chicken Leek and Butternut Squash Bake, it’s easy to overlook some details. Here are common mistakes to watch out for:
-
Skipping ingredient prep: Failing to properly prepare the chicken and vegetables can lead to uneven cooking. Always dice your chicken and cube your butternut squash for even results.
-
Not seasoning enough: Underseasoning can dull the flavor of your dish. Be generous with salt, pepper, and herbs like thyme to enhance taste.
-
Overcrowding the baking dish: Placing too much in the dish can result in steaming instead of baking. Ensure there’s enough space for heat circulation.
-
Ignoring resting time: Cutting into your bake immediately after it comes out of the oven can make it fall apart. Allow it to rest for 5 minutes before serving for better texture.
-
Using low-quality broth: A good chicken broth adds depth to the sauce. Opt for a high-quality or homemade broth for the best flavor.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftovers in an airtight container.
- It will keep well in the fridge for up to 3 days.
Freezing Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Freeze in a suitable freezer-safe container.
- It can be stored in the freezer for up to 3 months.
Reheating Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
- Oven: Preheat to 350°F (175°C) and bake covered for about 20 minutes until heated through.
- Microwave: Heat on medium power for 2-3 minutes, stirring halfway through.
- Stovetop: In a skillet over medium heat, add a splash of broth and stir until warmed through.
Frequently Asked Questions
Here are some common questions about Chicken Leek and Butternut Squash Bake:
Can I make Chicken Leek and Butternut Squash Bake ahead?
Yes! You can prepare it a day in advance and store it in the refrigerator before baking.
What can I substitute for heavy cream?
You may use half-and-half or a plant-based cream alternative if you prefer a lighter option.
How long does Chicken Leek and Butternut Squash Bake last?
When stored properly, it lasts up to 3 days in the refrigerator or up to 3 months if frozen.
Can I add other vegetables?
Absolutely! Feel free to incorporate veggies like carrots or spinach for added nutrition and flavor.
Final Thoughts
Chicken Leek and Butternut Squash Bake is not only comforting but also versatile. This one-pan dinner makes weeknight meals simple while allowing room for customization. Try adding your favorite herbs or swapping ingredients based on what’s available. Enjoy this delightful dish with family or friends!
Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner
Indulge in the comforting flavors of Chicken Leek and Butternut Squash Bake – The Ultimate One-Pan Dinner. This creamy casserole combines tender chicken breast, sweet butternut squash, and aromatic leeks, all enveloped in a rich sauce that promises to warm the heart. Perfect for a cozy family dinner or meal prep, it’s a versatile dish that can easily be adjusted based on your pantry staples. With minimal cleanup thanks to its one-pan preparation, this dish is not only delicious but also practical for busy weeknights. Enjoy leftovers throughout the week, making every bite as delightful as the first.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: Serves 6
- Category: Dinner
- Method: Baking
- Cuisine: American
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 oven to 375°F (190°C) and grease a baking dish.
- Heat olive oil in a skillet over medium heat, add diced chicken, season with salt and pepper, and cook until no longer pink (about 5–7 minutes). Remove from skillet.
- Sauté sliced leeks in the same skillet for about 5 minutes until softened. Stir in minced garlic and thyme; cook for another minute.
- Add cubed butternut squash to the skillet and cook until slightly golden (about 5 minutes).
- Return chicken to the skillet; stir in chicken broth, heavy cream or crème fraîche, ground nutmeg, and half the Parmesan cheese. Simmer for 2–3 minutes.
- Transfer mixture to the greased baking dish. Top with remaining cheese and breadcrumbs if desired.
- Bake for 25–30 minutes until golden brown and bubbly. Let rest for 5 minutes before serving.
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 365
- Sugar: 4g
- Sodium: 500mg
- Fat: 20g
- Saturated Fat: 10g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 22g
- Fiber: 3g
- Protein: 24g
- Cholesterol: 90mg