As I pulled the fragrant spaghetti squash from the oven, a wave of excitement washed over me—today’s dish was about to elevate our family dinner. The vibrant colors of the Pesto Chicken Stuffed Spaghetti Squash danced before my eyes, promising a delightful blend of flavors and nutrition. This healthy dinner is not just a visual feast; it’s a quick and satisfying way to transform mealtime into something special without the stress. Packed with tender chicken and a homemade pesto that sings of freshness, it’s also a low-carb delight that is sure to impress both family and friends. Wondering how to make this culinary masterpiece in your own kitchen? Let’s dive into the delicious details!

Why is This Recipe a Must-Try?
Healthy and delicious: The Pesto Chicken Stuffed Spaghetti Squash combines nutritious ingredients and vibrant flavors that even picky eaters will love.
Quick to prepare: With minimal prep time and straightforward cooking steps, you’ll have dinner ready in no time, perfect for busy weeknights.
Versatile options: Feel free to swap in shrimp or turkey, or add your favorite veggies for a unique twist each time!
Family-friendly: This dish caters to all ages, bridging the gap between health and indulgence—kids will enjoy the cheesy goodness.
Guilt-free comfort: Enjoy a satisfying meal that feels indulgent without the carbs! Serve with a fresh side salad or crusty bread for a complete experience. For more healthy twists, check out our Low Carb Chicken or Garlic Parmesan Chicken recipes!
Pesto Chicken Stuffed Spaghetti Squash Ingredients
For the Squash
• Large Spaghetti Squash – Serves as a low-carb pasta substitute, expertly soaking up the flavors of the dish.
For the Chicken Filling
• Chicken Breast (1 pound) – The main protein source; you can use shrimp or turkey for a different flavor profile.
• Salt and Pepper – Essential seasonings that enhance the overall flavor of the chicken.
• Pesto Sauce (1 cup) – Opt for homemade for a fresh taste, but jarred pesto works in a hurry.
For the Cheesy Topping
• Parmesan Cheese (1/4 cup) – Adds depth and creaminess to the filling, melding beautifully with the squash.
• Mozzarella Cheese (1/4 cup) – Melts to create a gooey, irresistible topping that elevates the dish to new heights.
Step‑by‑Step Instructions for Pesto Chicken Stuffed Spaghetti Squash
Step 1: Preheat the Oven
Begin by preheating your oven to 375°F (190°C). This temperature is perfect for roasting the spaghetti squash, allowing it to become tender and flavorful. As the oven heats, gather your ingredients and prepare your baking sheet by lining it with parchment paper for easy cleanup.
Step 2: Prepare the Spaghetti Squash
Carefully cut the large spaghetti squash in half lengthwise using a sharp knife, taking care to stabilize it on the cutting board. Scoop out the seeds and stringy bits with a spoon, creating a clean cavity for the filling. Place the squash halves cut side down on the prepared baking sheet, ensuring they are well spaced for even cooking.
Step 3: Season the Chicken
Next, prepare the chicken breasts by halving them to ensure they cook evenly. Season both sides generously with salt and pepper, enhancing their natural flavors. Place the seasoned chicken breasts on the same baking sheet as the squash, reserving space as they will bake together, creating a wonderful blend of aromas.
Step 4: Bake the Squash and Chicken
Slide the baking sheet into the preheated oven and bake the spaghetti squash for 45 minutes, while the chicken bakes for 30–40 minutes. Keep an eye on both; the squash should be fork-tender, and the chicken should reach an internal temperature of 165°F (75°C) for safe consumption. This baking step creates the perfect base for your Pesto Chicken Stuffed Spaghetti Squash.
Step 5: Scrape the Squash
Once everything is cooked, carefully remove the baking sheet from the oven and let the squash and chicken cool for a few minutes. Use a fork to scrape the flesh of the spaghetti squash into strands, resembling noodles. Transfer these noodles into a large mixing bowl, ready to combine with the chicken and pesto.
Step 6: Combine Filling Ingredients
Chop the baked chicken into small, bite-sized pieces and add it to the bowl with the spaghetti squash. Pour in the fragrant pesto sauce, ensuring everything is covered and combined well. This mixture will become the flavorful filling that brings together the elements of your Pesto Chicken Stuffed Spaghetti Squash.
Step 7: Stuff the Squash
Carefully spoon the chicken and pesto mixture back into the hollowed-out squash halves, distributing it evenly. This step beautifully showcases the vibrant colors of your dish. Once stuffed, sprinkle the tops with mozzarella and parmesan cheese, adding a delicious cheesy layer that will melt and form a delightful crust.
Step 8: Broil for a Golden Finish
Finally, place the stuffed spaghetti squash back into the oven on the broiler setting. Broil for about 5-7 minutes or until the cheese is bubbling and golden brown. Keep a close eye on this step to prevent burning; this final touch will create that irresistible crispy and gooey topping that makes the Pesto Chicken Stuffed Spaghetti Squash so enjoyable.

Expert Tips for Pesto Chicken Stuffed Spaghetti Squash
• Prep Ahead: You can roast the spaghetti squash and chicken a day in advance to save time during busy weeknights. Just reheat before stuffing!
• Even Cooking: Ensure the spaghetti squash halves are cut evenly for consistent cooking—if they’re too uneven, one side may cook faster than the other.
• Taste Test: Don’t hesitate to taste your pesto before mixing it with the chicken; adjust seasoning as needed to ensure perfect flavor in your Pesto Chicken Stuffed Spaghetti Squash.
• Cheese Options: For a twist, try adding crumbled feta or goat cheese alongside mozzarella for added flavor complexity and creaminess.
• Leftovers: This dish is great for leftovers; just make sure to store them in an airtight container and enjoy within 3-4 days!
What to Serve with Pesto Chicken Stuffed Spaghetti Squash?
Bring warmth and coziness to your dining table with delightful pairings that elevate your meal experience.
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Mixed Green Salad: Fresh greens topped with a light vinaigrette provide a crisp contrast to the savory stuffed squash, making each bite refreshing.
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Garlic Bread: Crunchy and buttery, this classic side offers a comforting pairing, perfect for scooping up any leftover filling from the squash.
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Roasted Vegetables: Seasoned and caramelized, they add an earthy sweetness that enhances the dish’s flavors, plus a pop of color on your plate.
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Quinoa Pilaf: Fluffy quinoa studded with vegetables adds protein and texture, making for a satisfying and nutritious side that balances the meal beautifully.
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Herbed Couscous: Light and fluffy, this grain dish absorbs flavors effortlessly, providing a delightful contrast to the cheesy goodness of the squash.
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Chardonnay: A glass of chilled Chardonnay pairs beautifully with the pesto, enhancing the herbal notes while refreshing the palate.
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Lemon Sorbet: A light dessert option that cleanses the palate, leaving a bright, citrus finish that complements the rich spaghetti squash dish.
Pesto Chicken Stuffed Spaghetti Squash Variations
Feel free to get creative with this delightful recipe—your taste buds will thank you for the adventure!
- Veggie Boost: Add roasted bell peppers or cherry tomatoes for a vibrant, nutritious twist. Their sweetness complements the pesto beautifully.
- Seafood Swap: Substitute the chicken with shrimp for a seafood spin that’s equally delicious! Shrimp adds a lovely flavor and pairs wonderfully with the basil in the pesto.
- Turkey Variation: Use ground turkey instead of chicken for a leaner option while keeping all the flavors intact. It’ll still be just as hearty!
- Gluten-Free: If you want a truly gluten-free meal, ensure your pesto is made without any gluten-containing ingredients, or use a homemade version. You won’t miss a thing!
- Extra Cheese: Crumble in some feta cheese or add a layer of goat cheese on top for a creamy twist that enhances the overall flavor profile. The tanginess contrasts beautifully with the other ingredients.
- Spice it Up: Add crushed red pepper flakes or diced jalapeños for a kick of heat. This enhances the depth of flavors and makes each bite exciting!
- Herb Infusion: Fresh herbs like basil or parsley can elevate the freshness of the dish. A sprinkle of fresh herbs right before serving adds a pop of color and flavor.
- Nutty Crunch: Top with toasted pine nuts or walnuts for extra texture and nutrition. They bring a lovely crunch that makes each bite satisfying.
As you explore these variations, consider pairing your meal with a refreshing mixed green salad or a crusty bread that complements the richness of your Pesto Chicken Stuffed Spaghetti Squash! If you loved this recipe, be sure to check out our tasty Thai Peanut Chicken for another family-friendly dinner idea!
Storage Tips for Pesto Chicken Stuffed Spaghetti Squash
Fridge: Store cooked Pesto Chicken Stuffed Spaghetti Squash in an airtight container for up to 3-4 days. Reheat in the microwave or oven before serving to maintain flavor and texture.
Freezer: For longer storage, freeze the prepared stuffed squash after baking, ensuring it’s tightly wrapped. It can be stored for up to 2 months—just thaw overnight in the fridge before reheating.
Reheating: Reheat the stuffed squash in the oven at 350°F (175°C) for about 20 minutes or until heated through. This will help revive the cheesy topping and flavors beautifully.
Room Temperature: Avoid leaving the stuffed spaghetti squash out at room temperature for more than 2 hours to ensure food safety.
Make Ahead Options
These Pesto Chicken Stuffed Spaghetti Squash are perfect for meal prep enthusiasts! You can prepare the spaghetti squash and the chicken filling up to 24 hours in advance. To do this, simply bake the spaghetti squash and chicken as outlined, then allow both to cool before scooping the squash and chopping the chicken. Store them separately in airtight containers in the refrigerator. When you’re ready to enjoy this healthy meal, combine the squash and chicken with the pesto, stuff the mixture back into the squash halves, top with cheese, and broil until golden brown. This way, you’ll have a delicious, nutritious dinner with very little effort on the day of serving!

Pesto Chicken Stuffed Spaghetti Squash Recipe FAQs
How do I choose the right spaghetti squash?
Absolutely! When selecting a spaghetti squash, look for large, firm squashes with a uniform yellow color. Avoid any with dark spots or blemishes, as these can indicate overripeness. A good squash feels heavy for its size, and you want one that has a slight sheen for the freshest flavor.
How should I store leftover Pesto Chicken Stuffed Spaghetti Squash?
You can store your cooked Pesto Chicken Stuffed Spaghetti Squash in an airtight container in the refrigerator for up to 3-4 days. Just reheat in the microwave or oven before serving to bring back its delicious flavors and cheesy texture!
Can I freeze Pesto Chicken Stuffed Spaghetti Squash?
Very much! To freeze, make sure the squash is fully cooked and cooled. Then, wrap the stuffed squash tightly in plastic wrap or foil and place it in a freezer-safe bag. It can be stored for up to 2 months. When you’re ready to enjoy it again, thaw overnight in the refrigerator and reheat in the oven at 350°F (175°C) for about 20 minutes or until warmed through.
What should I do if my spaghetti squash is too hard to cut?
No worries! If you find your spaghetti squash too hard to cut, simply microwave it whole for about 5 minutes. This softens the skin, making it much easier to slice in half. Always be careful while cutting, as the squash can still be slippery.
Is this recipe safe for those with nut allergies?
Yes, it is! The Pesto Chicken Stuffed Spaghetti Squash is generally nut-free, especially if you make your own pesto or use a store-bought variety that specifies being nut-free. Always double-check the ingredients to ensure safety, especially if cooking for someone with allergies.
What can I do if my pesto is too thick?
If your pesto is too thick when mixing with the chicken, you can loosen it by adding a tablespoon or two of olive oil or even a splash of chicken broth. Stir until you reach your desired consistency. This will also enhance the flavors and help the mixture blend more smoothly!

Delicious Pesto Chicken Stuffed Spaghetti Squash for Dinner
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C).
- Carefully cut the spaghetti squash in half lengthwise and scoop out the seeds.
- Season the chicken breasts with salt and pepper.
- Bake the spaghetti squash for 45 minutes and chicken for 30-40 minutes.
- Once cooked, scrape the spaghetti squash into strands.
- Combine the spaghetti squash, chopped chicken, and pesto in a bowl.
- Stuff the mixture back into the squash halves and top with mozzarella and parmesan cheese.
- Broil for 5-7 minutes until the cheese is bubbly and golden.

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