Cheesy Baked Spaghetti Squash with Marinara Sauce is a comforting dish that brings warmth and satisfaction to any table. This recipe is not only incredibly easy to prepare but also delivers a delightful blend of flavors and textures that will have your family coming back for more. The tender strands of spaghetti squash are enveloped in a rich marinara sauce, topped with gooey mozzarella and a crispy buttery panko crust. Perfect for a weeknight dinner or a cozy gathering, this dish evokes feelings of nostalgia and comfort.
Ingredients
To create this delicious dish, you will need the following ingredients:
- 2 medium spaghetti squash (about 2½ lbs / 1.1 kg each) – These vibrant squashes have a unique texture that mimics noodles when roasted, making them a fantastic low-carb base.
- 1 tablespoon extra-virgin olive oil – Adds a rich, fruity depth of flavor that beautifully complements the squash.
- Salt – Essential for enhancing the flavors and balancing the dish.
- Freshly ground black pepper – Offers a delightful bite that elevates the overall taste.
- 1¾ cups jarred marinara sauce – A high-quality marinara (like Rao’s or Victoria) adds a robust, rich flavor.
- 2 teaspoons chopped fresh thyme (plus more for serving, or ¾ teaspoon dried) – Provides an earthy aroma and flavor that harmonizes with the other ingredients.
- 1½ cups shredded whole milk mozzarella cheese – Melts into a creamy, gooey topping that is irresistible.
- 3 tablespoons finely grated Parmigiano-Reggiano – Adds a nutty, salty layer of flavor with a slightly gritty texture.
- 1½ tablespoons unsalted butter (melted) – Imparts a rich buttery flavor to the panko topping.
- ¾ cup panko – This Japanese breadcrumb adds an airy crunch, making the dish even more enjoyable.
Step-by-Step Directions
Preheat and Prep the Oven
- Begin by preheating your oven to 400°F (205°C). Position an oven rack in the middle and line a baking sheet with heavy-duty aluminum foil for easy cleanup.
Cut and Cook the Squash
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With a sharp chef’s knife, slice a thin sliver off the stem end of each squash to create a stable base. Stand the squash upright and carefully cut it in half lengthwise, using your body weight to assist in pressing the knife down safely.
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Scoop out the seeds using a soup spoon and discard them.
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Place the squash halves cut-side-up on your prepared baking sheet. Drizzle with olive oil and sprinkle each half with 1 teaspoon salt and ½ teaspoon pepper. Rotate the halves so they are now cut-side-down on the baking sheet.
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Roast your squash in the oven for 40 to 50 minutes, or until the undersides are golden brown and tender enough to pierce with a fork. You should be able to scrape the strands away from the skin easily. After removing the squash from the oven, flip them to cut-side-up and let them cool for a few minutes.
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When cool enough to handle, use a fork to scrape out and fluff the strands of spaghetti squash into a large bowl.
Combine Ingredients
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Raise the oven temperature to 425°F (220°C).
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In the large bowl with the spaghetti squash strands, add the marinara sauce, ¾ teaspoon salt, ¼ teaspoon pepper, and thyme. Gently toss to coat the squash evenly with the sauce. Taste and adjust the seasoning as needed.
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Transfer the mixture into an ungreased 9 x 13-inch (23 x 33-cm) baking dish. Spread the shredded mozzarella cheese evenly over the top, followed by the Parmigiano-Reggiano.
Final Bake
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In a small bowl, combine the melted butter with the panko, mixing until all the crumbs are evenly coated. Sprinkle this mixture generously over the cheese layer.
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Bake for 25 to 30 minutes or until the top is golden and crispy. Allow it to cool for a few minutes before garnishing with additional fresh thyme and serving.
Tips & Tricks
- Choose ripe squash: Look for squashes that have consistent color and are heavy for their size. This ensures sweetness and tenderness.
- Season generously: Don’t be shy with the salt and pepper; they enhance the flavors significantly.
- Cheese choices: While mozzarella is classic, feel free to experiment with other cheeses like fontina or cheddar for varied flavors.
Serving Suggestions & Pairings
Cheesy Baked Spaghetti Squash with Marinara Sauce is superb on its own but can also be paired with a simple green salad for a refreshing contrast. Serve alongside garlic bread for dip lovers or a protein source like grilled chicken or shrimp to bolster the meal. This dish is perfect for family gatherings, potlucks, or as a delightful weeknight dinner.
Nutritional Information
This recipe yields approximately 6 servings, with each serving containing around 350 calories. It is a great source of fiber from the squash and provides a moderate amount of protein from the cheese. Packed with vitamins and minerals, this dish is a balanced option for a hearty meal, especially when paired with nutrient-dense sides.
Storing Tips & Variations
- Storage: Leftovers can be stored in an airtight container in the refrigerator for up to three days.
- Freezing: If you want to freeze, portion the baked spaghetti squash into freezer-safe bags. It can last up to three months.
- Reheating: Reheat in the oven at 350°F (175°C) until warmed through, or in a microwave if you’re short on time.
- Variations: Add cooked ground turkey or sausage for extra protein, or mix in vegetables like spinach or mushrooms for more nutrients.
Conclusion
Cheesy Baked Spaghetti Squash with Marinara Sauce is a dish that deserves to take center stage at your dining table. Its ease of preparation and comforting flavors make it a go-to for any occasion. We encourage you to give this recipe a try and savor the pleasure it brings! Don’t forget to share your experiences in the comments below.
FAQs
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Can I use another type of squash?
Absolutely! While spaghetti squash is perfect for this dish, you can substitute it with other squash varieties, though the texture may differ. -
Is it possible to make this dish vegan?
Yes, you could use vegan cheeses and substitute the butter with olive oil or dairy-free butter, and it will still be delicious. -
How do I know when the squash is perfectly roasted?
The squash should be tender when pierced with a fork and have a golden brown underside, indicating it’s ready to fluff the strands. -
Can I make this ahead of time?
Yes, you can prepare the squash and mix it with the sauce ahead of time, then assemble and bake it just before serving. -
What are some good substitutions for marinara sauce?
If you don’t have marinara, you can use other tomato-based sauces or even a homemade tomato sauce seasoned to your taste.

Cheesy Baked Spaghetti Squash with Marinara Sauce
Ingredients
Method
- Preheat your oven to 400°F (205°C). Line a baking sheet with heavy-duty aluminum foil.
- Slice a thin sliver off the stem end of each squash to create a stable base. Cut it in half lengthwise.
- Scoop out the seeds and discard them.
- Place the squash cut-side-up on the baking sheet, drizzle with olive oil, and sprinkle with salt and pepper.
- Roast in the oven for 40 to 50 minutes or until tender and golden brown.
- Flip the squash to cut-side-up after roasting and let cool for a few minutes. Fluff the strands with a fork into a bowl.
- Increase the oven temperature to 425°F (220°C).
- Add marinara sauce, salt, pepper, and thyme to the squash strands and toss to combine.
- Transfer the mixture to a baking dish and spread shredded mozzarella on top, followed by Parmigiano-Reggiano.
- Mix melted butter with panko and sprinkle over the cheese layer.
- Bake for 25 to 30 minutes until the top is golden and crispy.
- Cool for a few minutes before garnishing with thyme and serving.






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