This Spaghetti Squash Casserole is a game-changer! Imagine curling up with a warm, cheesy dish that tastes like your favorite Italian comfort food but doesn’t come with the guilt of traditional pasta. Whether you’re a seasoned cook or just starting out in the kitchen, this recipe is perfect for anyone looking to try something new. Spaghetti squash takes the spotlight here, offering a light, veggie-filled alternative that’s still hearty and satisfying. The creamy ricotta, tangy marinara, and gooey cheese come together for a flavor explosion that will have everyone coming back for seconds. Plus, it’s not just about taste; it’s about making a meal that feels good. So grab your apron, and let’s create a delicious meal that could become a family favorite!
Thank you for reading this post, don't forget to subscribe!Why This Recipe Works
This Spaghetti Squash Casserole cleverly substitutes traditional pasta with healthy spaghetti squash, giving you a delightful and guilt-free comfort food experience. The harmonious blend of creamy ricotta, savory marinara, and melted cheese creates a satisfying dish that resonates with anyone who enjoys classic Italian flavors.
Not to mention, spaghetti squash is quite forgiving in texture, allowing it to mimic that comforting pasta feel without the heaviness. As you dig into each bite, you’ll appreciate how each ingredient complements the others, with the sauce binding everything together brilliantly. It’s a dish that feels indulgent but is packed with nutrients, making it an easy choice for anyone looking to eat well without sacrificing flavor.
Why You’ll Love This Spaghetti Squash Casserole
This casserole is not only delicious but also a versatile option for busy weeknight dinners or a special gathering. The crispy edges, gooey cheese, and savory vegetables meld perfectly, bringing joy to your dinner plate while keeping health in check.
Whether you’re cooking for a picky eater or someone who embraces all things veggie, this dish satisfies all. It’s easy to prepare, easy to share, and leaves everyone feeling happy and full. Plus, leftovers are a real treat the next day, which makes your meal planning a breeze!

Ingredients
- 1 medium spaghetti squash (2 ½ to 3 pounds)
- 1 tablespoon olive oil
- 1 1/2 cups marinara sauce (plus extra for serving)
- 1 cup grated provolone or mozzarella cheese
- 1 cup whole milk ricotta cheese
- 1/2 cup grated parmesan cheese
- Black pepper, to taste
- Fresh basil leaves, for topping
Preparing the Spaghetti Squash

Roasting the Spaghetti Squash
To start with the spaghetti squash, preheat your oven to 400°F. Grab a rimmed baking sheet and either spray it with nonstick cooking spray or brush it with olive oil. You have a couple of options for roasting the squash. You can roast it whole by piercing it 10 times with a fork and placing it on the baking sheet. This method takes about 50-60 minutes. Alternatively, you can cut it in half lengthwise and roast it cut-side down for about 25-30 minutes until tender. This second method is quicker and often yields a deeper flavor.
Scraping the Squash
After the squash is roasted to perfection, let it cool until it’s safe to handle. If you went with the whole method, slice it in half and scoop out the seeds. Now, here comes the fun part! Use a fork to scrape the strands of squash out and transfer them to a large mixing bowl. You’ll notice those beautiful spaghetti-like strands just waiting to absorb all those flavors.
Assembling the Casserole
Combining Ingredients
In that mixing bowl full of spaghetti squash, add 1 ½ cups of marinara sauce and 1 cup of grated provolone or mozzarella cheese. Give it a good stir to combine everything. This is where the magic happens. You’re blending those delicious flavors together, creating a rich and satisfying base for the casserole.
Spreading in the Baking Dish
Now that everything is mixed, it’s time to spread that glorious mixture evenly onto the prepared baking sheet. Aim for a thin layer to ensure the casserole cooks evenly. This step may seem simple, but it’s vital for achieving that perfect texture.
Adding Ricotta and Parmesan
To create those creamy layers, drop tablespoons of ricotta cheese evenly over the top of the squash mixture. Don’t be shy here! And then, scatter the grated parmesan cheese all over for that irresistible cheesy layer we all crave. Just imagine how melty and delicious that will be once it’s baked.
Baking the Casserole
Broiling for Perfect Crispiness
Preheat your broiler, and set your oven rack about 8 inches below it. Broiling gives the casserole that final touch of perfect crispiness. Broil the casserole for about 6 to 8 minutes until the top turns golden and crispy. Keep a close eye on it; you don’t want it to burn. The aroma wafting through your kitchen will be nearly irresistible!
Garnishing and Serving
Final Touches
Once your casserole is out of the oven and looking gorgeous, it’s time to sprinkle some black pepper over it. Adding fresh basil leaves not only enhances the flavor but also creates a beautiful presentation. Slice it into squares and serve warm—with extra marinara on the side for those who like it a bit saucier. What a treat!
Serving Suggestions
This Spaghetti Squash Casserole pairs beautifully with a light side salad or some crispy garlic bread. It’s a complete meal on its own, but if you’re feeling fancy, serve it alongside a light red wine or sparkling water. The combination makes for a delightful dining experience where everyone can enjoy each delicious bite.
Tips for Success
- Make sure the spaghetti squash is tender before scraping; it enhances the final texture of your dish.
- Feel free to customize the dish with your favorite vegetables; spinach or mushrooms blend nicely and add extra nutrition.
- Keep a close eye on the broiler; every oven behaves a bit differently, and you’ll want that perfect golden finish!
Variations
- For a fresh twist, try substituting marinara sauce with pesto.
- If you’re in the mood for something heartier, add cooked ground turkey or sausage into the mix.
- Vegan alternatives can also shine here; try using cashew cheese and nutritional yeast in place of dairy cheese for a creamy effect.
Storage Tips
If you happen to have leftovers—which is doubtful, but just in case—store them in an airtight container in the fridge for up to 4 days. You can easily reheat these in the microwave or oven. For longer storage, try freezing portions in freezer-safe containers, where they can hang out for up to 2 months. Thaw and reheat for a quick and easy meal later on!

FAQs
1. Can you make Spaghetti Squash Casserole ahead of time?
Yes, absolutely! You can prepare the casserole and store it unbaked in the refrigerator for up to 24 hours before you broil it.
2. Can leftovers be frozen?
Yes, you can freeze the cooked casserole in portions. Remember to thaw it in the fridge before reheating for the best results.
3. What toppings can I add?
Feel free to add breadcrumbs for an extra crunch, crushed red pepper for a kick, or additional herbs like oregano for flavor.
4. Is spaghetti squash healthy?
Absolutely! It’s lower in calories and carbs compared to traditional pasta while being high in vitamins and fiber.
5. Can I use a different cheese?
Yes, you can easily swap in any cheese that melts well, like cheddar or gouda, based on your taste preference.
This Spaghetti Squash Casserole brings an exciting combination of flavors and textures that will satisfy your cravings while nourishing your body. Its versatility allows for customization, making it suitable for any occasion. Whether as a comforting weeknight meal or a special dish for guests, this recipe stands as a celebration of wholesome ingredients, letting you enjoy the rich comforts of lasagna without the heavy guilt. Dig in and enjoy every bite!
Print
Spaghetti Squash Casserole
Enjoy a healthy twist on comfort food with this Spaghetti Squash Casserole, featuring creamy ricotta, tangy marinara, and gooey cheese for a satisfying meal.
- Total Time: 1 hour 15 minutes
- Yield: 6 servings 1x
Ingredients
- 1 medium spaghetti squash (2 ½ to 3 pounds)
- 1 tablespoon olive oil
- 1 1/2 cups marinara sauce (plus extra for serving)
- 1 cup grated provolone or mozzarella cheese
- 1 cup whole milk ricotta cheese
- 1/2 cup grated parmesan cheese
- Black pepper, to taste
- Fresh basil leaves, for topping
Instructions
- Preheat oven to 400°F.
- Roast spaghetti squash whole or halved until tender.
- Cool, scoop out seeds, and scrape strands into a bowl.
- Mix in marinara and cheese, then spread in a baking dish.
- Add ricotta and parmesan cheeses on top.
- Broil until crispy and golden brown.
- Garnish with black pepper and basil, serve warm.
Notes
Ensure spaghetti squash is tender for best texture.
Customize with favorite vegetables for added nutrition.
Monitor broiling closely to achieve perfect crispiness.
- Prep Time: 15 minutes
- Cook Time: 60 minutes
- Category: Main Dish
- Method: Baking
- Cuisine: Italian
Nutrition
- Calories: 320
- Sugar: 5
- Sodium: 640
- Fat: 15
- Saturated Fat: 8
- Unsaturated Fat: 4
- Trans Fat: 0
- Carbohydrates: 30
- Fiber: 6
- Protein: 16
- Cholesterol: 40






