As the leaves change color and the air turns crisp, I find myself craving cozy meals that warm both body and soul. One such delight is this Chicken Pesto Spaghetti Squash, a dish that effortlessly balances comfort and gourmet flair. Imagine the sweet, nutty aroma of roasted squash mingling with the vibrant, herby notes of pesto. This recipe not only turns a humble vegetable into a star but also offers a satisfying alternative to fast food that even the busiest among us can appreciate.
After a whirlwind week of work and life’s demands, I stumbled upon this gem and realized that making a nutritious dinner didn’t have to be a chore. With just a few simple ingredients and less than an hour, this dish transforms fresh, wholesome components into a colorful feast that’s sure to impress. Say goodbye to bland weeknight meals and hello to a comforting plate of deliciousness that you can whip up with ease. Ready to take your dinner game to the next level? Let’s dive in!
Why Love Chicken Pesto Spaghetti Squash?
Imagine a dish that brings together everything you crave in a meal: wholesome, vibrant flavors and a comforting texture. Easy preparation means you’ll spend less time in the kitchen, making it perfect for busy weeknights. Nutritious yet satisfying, this recipe shines with the rich flavors of pesto and tender chicken. Versatile enough to adapt to your favorite seasonal veggies or proteins. Plus, it’s a crowd-pleaser that’ll impress family and friends—all while keeping you on track with healthier choices. Don’t miss out on a chance to elevate your dinner repertoire with this fantastic dish!
Chicken Pesto Spaghetti Squash Ingredients
Elevate your dinner with these vibrant flavors!
For the Spaghetti Squash
• Spaghetti squash – the star of this dish, offering a healthy, low-carb base with a subtle sweetness.
• Olive oil – enhances flavor while promoting heart health; feel free to substitute with avocado oil for a different twist.
For the Chicken Mixture
• Chicken breasts – diced to ensure quick cooking and flavor absorption, you can swap for turkey if preferred.
• Salt & pepper – to taste; seasoning is key to bringing out the best in your ingredients.
• Red onion – adds a mild sweetness and crunch; yellow onion works too if you’re in a pinch.
• Red pepper – imparts a fresh, sweet note; try yellow or orange peppers for a splash of color.
For the Final Touch
• Store-bought pesto – a time-saver packed with flavor; homemade pesto is an excellent option if you have the time!
• Bocconcini cheese – creamy and melt-in-your-mouth; mozzarella cubes can be a lovely stand-in if needed.
This Chicken Pesto Spaghetti Squash recipe will surely brighten up your dinner table!
How to Make Chicken Pesto Spaghetti Squash
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Preheat your oven to 425°F. Carefully cut the spaghetti squash in half and scoop out the seeds. Drizzle each half with olive oil, then sprinkle with salt and pepper before placing them on a baking sheet. Bake for 35 minutes until tender.
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Sauté chicken in a skillet over medium-high heat. Cook the diced chicken for about 3-4 minutes until lightly browned, seasoning with salt and pepper. Then, add the sliced red onion and diced red pepper, continuing to sauté for another 3-4 minutes until the vegetables soften. Toss the mixture with pesto before removing it from the heat.
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Scrape the insides of the baked spaghetti squash with a fork to create those delightful noodle-like strands. Stuff each half with the chicken mixture, then top with sliced bocconcini cheese. Return to the oven and bake for an additional 10 minutes, or until the cheese melts beautifully.
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Serve your Chicken Pesto Spaghetti Squash warm and enjoy every delicious bite!
Optional: Sprinkle with fresh basil for an aromatic garnish.
Exact quantities are listed in the recipe card below.

Make Ahead Options
These Chicken Pesto Spaghetti Squash are perfect for meal prep enthusiasts! You can roast the spaghetti squash and store it in the refrigerator for up to 3 days before using, which makes weeknight cooking a breeze. Additionally, you can sauté the chicken mixture (chicken, onion, and red pepper) ahead of time and refrigerate it for up to 2 days. To maintain quality, be sure to let the cooked squash and chicken mixture cool before refrigerating, which prevents excess moisture. When ready to serve, simply combine the two, top with bocconcini cheese, and bake for an additional 10 minutes. You’ll enjoy the same wholesome flavors and textures with minimal effort!
Chicken Pesto Variations
Feel free to personalize this dish and explore a world of flavors! Each variation brings unique twists that can make your meal even more delightful.
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Vegan: Replace chicken with chickpeas or roasted vegetables for a plant-based delight that still delivers satisfying protein and flavor.
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Spicy Kick: Add red pepper flakes or diced jalapeños to the chicken mixture for a zesty heat that will awaken your taste buds. A little spice goes a long way!
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Cheesy Upgrade: Swap bocconcini with a combination of ricotta and Parmesan for a rich, creamy texture that enhances the overall flavor profile.
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Herb Infusion: Incorporate fresh herbs like basil, thyme, or oregano into the pesto for a vibrant taste that freshens up the dish and adds an aromatic touch.
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Nutty Addition: Sprinkle pine nuts or walnuts on top before serving to introduce a delicious crunch and elevate the dish’s wholesome quality.
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Creamy Sauce: Mix in a splash of cream cheese or Greek yogurt with the pesto for a creamy, dreamy sauce that coats the chicken and veggies beautifully.
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Roasted Veggies: Add roasted zucchini, asparagus, or spinach for extra nutrition and an inviting medley of colors that brighten your plate.
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Citrus Twist: Squeeze fresh lemon juice over the finished dish for a bright and zesty finish that lifts all those lovely flavors and adds a refreshing touch.
Expert Tips for Chicken Pesto Spaghetti Squash
• Choose Perfect Squash: Look for spaghetti squash with a firm, smooth skin. Avoid any soft spots to ensure a delicious texture in your dish.
• Don’t Rush the Baking: Allow the spaghetti squash to roast fully for the best flavor. Undercooking can lead to watery, less flavorful strands.
• Season Generously: Don’t skimp on salt and pepper! These seasonings bring out the natural flavors of the vegetables and chicken in your Chicken Pesto Spaghetti Squash.
• Experiment with Pesto: While store-bought pesto is a great time-saver, making your own can elevate the dish. Consider adding nuts for more depth, or swap basil for arugula for a peppery twist.
• Mix It Up: Feel free to use different veggies or proteins based on what you have on hand. Add spinach, mushrooms, or even shrimp for a personalized touch to your Chicken Pesto Spaghetti Squash!
• Broil for Extra Flavor: For a beautiful golden-brown top, broil your stuffed squash for 1-2 minutes after baking—just keep an eye on it to prevent burning!
How to Store and Freeze Chicken Pesto Spaghetti Squash
Fridge: Store any leftovers in an airtight container in the fridge for up to 3 days. This keeps your Chicken Pesto Spaghetti Squash fresh and ready to reheat.
Freezer: If you want to keep it longer, freeze the stuffed squash in a freezer-safe container for up to 3 months. Thaw overnight in the fridge before reheating.
Reheating: To reheat, place in the oven at 350°F for 15-20 minutes until warmed through. You can also microwave it for quicker results, just ensure it’s covered to avoid dryness.
Assembly Tips: If you prefer to freeze, consider storing the squash and chicken mixture separately to maintain the best texture upon reheating.
What to Serve with Chicken Pesto Spaghetti Squash?
Imagine the cozy atmosphere of your kitchen as you prepare a full meal, surrounded by warm aromas and flavors that invite everyone to gather around the table.
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Garlic Bread: Perfectly crisp, this buttery classic complements the dish’s fresh flavors and makes every bite even more satisfying.
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Mixed Green Salad: A refreshing salad with a tangy vinaigrette adds a crunchy texture that balances the richness of the pesto and cheese.
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Roasted Brussels Sprouts: Their slightly caramelized, nutty flavor pairs beautifully with the dish, enhancing the meal with an earthy touch.
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Grilled Asparagus: Tender and vibrant, this vegetable brings a hint of smokiness that complements the herby notes of the pesto.
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Lemon-Infused Quinoa: Light and fluffy, quinoa can soak up the pesto’s flavors while adding nutritious grains to your meal.
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Sparkling Water with Citrus: Refreshing and zesty, this drink cleanses the palate and elevates the overall dining experience.
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Dark Chocolate Mousse: For a sweet ending, this rich dessert provides a delightful contrast to the savory chicken and vibrant squash.
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Herb-Infused Olive Oil: Drizzling a blend over the finished dish enhances every bite and adds a touch of gourmet flair.

Chicken Pesto Spaghetti Squash Recipe FAQs
How do I choose the perfect spaghetti squash?
Absolutely! When selecting a spaghetti squash, look for one with a firm, smooth skin and no soft spots. The color should be a pale yellow or cream, and it should feel heavy for its size. This ensures you’re starting with a fresh, delicious squash that will yield the tender, noodle-like strands we love.
What is the best way to store leftovers?
You can store any leftover Chicken Pesto Spaghetti Squash in an airtight container in the fridge for up to 3 days. I recommend portioning it out into smaller containers if you’re planning on reheating it for lunch or dinner throughout the week. Always let it cool to room temperature before sealing it up to prevent moisture buildup.
Can I freeze Chicken Pesto Spaghetti Squash?
Absolutely! To freeze this delightful dish, place the stuffed spaghetti squash halves in a freezer-safe container for up to 3 months. For best results, you might want to freeze the chicken mixture separately to maintain the texture. Just remember to thaw it overnight in the fridge before reheating, and plan to enjoy it within a few months for optimal flavor!
What should I do if my spaghetti squash is too watery?
If you find that your spaghetti squash has turned out watery, don’t fret! This can happen if the squash isn’t completely baked. Next time, I recommend letting it roast longer and ensuring the seeds are thoroughly removed. After scraping the insides, you can let the strands rest in a colander for a few minutes to drain any excess moisture before combining it with the chicken mixture.
Are there any dietary considerations I should keep in mind?
Very! For gluten-free diets, this dish is naturally gluten-free, making it a great option. If you’re concerned about dairy, you can omit the bocconcini cheese or substitute it with a dairy-free cheese alternative. Always check the pesto ingredients if allergies are a concern, as store-bought options can vary in ingredients.

Savor Chicken Pesto Spaghetti Squash for a Healthy Twist
Ingredients
Equipment
Method
- Preheat your oven to 425°F. Carefully cut the spaghetti squash in half and scoop out the seeds. Drizzle each half with olive oil, then sprinkle with salt and pepper before placing them on a baking sheet. Bake for 35 minutes until tender.
- Sauté chicken in a skillet over medium-high heat. Cook the diced chicken for about 3-4 minutes until lightly browned, seasoning with salt and pepper. Then, add the sliced red onion and diced red pepper, continuing to sauté for another 3-4 minutes until the vegetables soften. Toss the mixture with pesto before removing it from the heat.
- Scrape the insides of the baked spaghetti squash with a fork to create those delightful noodle-like strands. Stuff each half with the chicken mixture, then top with sliced bocconcini cheese. Return to the oven and bake for an additional 10 minutes, or until the cheese melts beautifully.
- Serve your Chicken Pesto Spaghetti Squash warm and enjoy every delicious bite!





