Introduction to Spaghetti Squash Au Gratin
When it comes to comfort food, spaghetti squash au gratin is a hidden gem that deserves a spotlight. This dish marries the warm, creamy richness typically found in traditional gratins with the unique, light texture of spaghetti squash, making it a fantastic alternative to heavy potato sides. If you’re on a quest for lower-carb options without sacrificing flavor, this is your answer.
But why is spaghetti squash the ultimate comfort food? For starters, it’s incredibly versatile. You can treat it as a healthy canvas to absorb your favorite seasonings and sauces. According to a study published by the USDA, spaghetti squash is low in calories, providing just about 42 calories per cup. This quality makes it an excellent base for cheesy bakes, like our delightful au gratin, which satisfies those cravings while keeping your meals guilt-free.
Not only does this dish taste fantastic, but it’s also an easy way to sneak more veggies into your day. Plus, it can impress even the pickiest eaters—you’d be surprised at how many kids love it! So, preheat your oven, grab your ingredients, and let’s dive into this heartwarming recipe that’s sure to become a staple in your kitchen.

Ingredients for Spaghetti Squash Au Gratin
When it comes to crafting the perfect spaghetti squash au gratin, selecting the right ingredients can make all the difference. Here’s what you’ll need to create this delicious, guilt-free dish!
Essential ingredients for the perfect gratin
- 1 spaghetti squash: The star of the show! Choose one that's firm and heavy for its size.
- 3 tablespoons light margarine: For that buttery flavor without the extra calories.
- 1 small yellow onion: Adds sweetness and depth.
- 1 teaspoon red pepper flakes: A splash of heat to excite your taste buds.
- ¼ teaspoon garlic powder: Enhances the savory profile.
- Salt and freshly ground black pepper: Essential for seasoning.
- ¾ cup fat-free sour cream: Gives creaminess without the calories.
- 1 cup shredded light Cheddar cheese: For that melty, cheesy goodness.
Optional ingredients to elevate your dish
To take your spaghetti squash au gratin to the next level, consider adding:
- Cooked turkey bacon or chicken ham: For a protein boost and extra flavor.
- Fresh herbs like thyme or parsley: A sprinkle for freshness.
- Breadcrumbs: For a delightful crunchy topping when broiled.
Experimenting with these ingredients can personalize your dish and make it truly yours! If you're looking for more cooking inspiration, check out The Kitchn's guide for creative twists on traditional recipes.
Preparing Spaghetti Squash Au Gratin
Cooking can be a delightful adventure, especially when exploring healthy alternatives that surprise even the pickiest eaters. Spaghetti squash is a fantastic option, and when transformed into a spaghetti squash au gratin, it becomes a creamy, cheesy delight that's hard to resist. Let’s break down this delicious recipe step by step.
Cook the Spaghetti Squash
Begin by cooking your spaghetti squash. Start by halving the squash and removing the seeds. Place the two halves in a covered microwave-safe dish with about a quarter-inch of water. Microwave on high for 10-12 minutes, depending on the size of your squash. You want it tender enough that a fork can scrape out those delicious strands easily. Once cooked, scrape it into a bowl and set it aside. For more tips on cooking spaghetti squash, you can check out resources from reputable cooking sites like Serious Eats.
Sauté the Aromatic Ingredients
While your squash is cooking, it's time to infuse the dish with flavor! In a medium skillet, melt 3 tablespoons of light margarine over medium heat. Add in 1 small sliced yellow onion, along with 1 teaspoon of red pepper flakes, ¼ teaspoon of garlic powder, and then season with salt and pepper to taste. Cook these aromatic ingredients for about 5 to 10 minutes, or until the onions turn a beautiful golden brown. The delightful aroma will fill your kitchen and might just have everyone asking what's cooking!
Combine Components for the Gratin
Now for the fun part—mixing everything together! In a large mixing bowl, combine the scraped spaghetti squash, the sautéed onion mixture, ¾ cup of fat-free sour cream, and half of the shredded light Cheddar cheese (1 cup total). Stir gently until all components are well incorporated and you can see the vibrant strands of squash throughout.
Assemble the Baking Dish
Preheat your oven to 375°F (190°C). While it’s warming up, take a baking dish and give it a light coat of nonstick cooking spray. Pour the spaghetti squash mixture into the dish, spreading it out evenly. To finish it off, sprinkle the remaining half cup of shredded light Cheddar cheese over the top—this is where the magic happens!
Bake to Perfection
Slide your baking dish into the preheated oven and let it bake for 20 to 25 minutes. For a golden-brown finish, turn on the broiler for the final 2 to 3 minutes. Keep a close eye on it, though! You want that top to be beautifully browned, not burnt.
And there you have it! This spaghetti squash au gratin is not just a healthier side dish but a scrumptiously cheesy alternative that may even convert the staunchest potato fans in your life. Give it a try, and watch everyone go back for seconds!

Variations on Spaghetti Squash Au Gratin
Spaghetti Squash with Turkey Bacon
If you're looking for a savory touch to your spaghetti squash au gratin, consider adding crispy turkey bacon. It brings a delightful crunch and a hint of smokiness to the dish. Simply cook the turkey bacon until crispy, chop it into pieces, then fold it into the mixture before baking. This savory addition is a hit for those busy weeknights and adds an extra layer of flavor your family will appreciate.
Spaghetti Squash with Chicken Ham
For those who prefer a more delicate flavor, try using chicken ham in your spaghetti squash au gratin. It’s a fantastic way to incorporate lean protein while keeping the dish light. Dice the chicken ham and mix it in with the spaghetti squash and cheese for a creamy, satisfying meal. This variation pairs wonderfully with a side salad dressed in lemon vinaigrette, providing a refreshing contrast to the gratin.
Feel free to explore these variations and bring your own flair to this delicious dish!
Cooking Tips and Notes for Spaghetti Squash Au Gratin
How to Choose the Right Spaghetti Squash
When selecting a spaghetti squash, look for one that feels firm and heavy for its size, with a smooth, golden-yellow skin. Avoid any with blemishes or soft spots, as these could indicate spoilage. A well-ripened squash will have a slight hollow sound when tapped. For a delicious spaghetti squash au gratin, you want a squash that's mature, as the taste and texture will be more flavorful.
Key Tips for Achieving Golden-Brown Gratin
To achieve that coveted golden-brown topping, ensure your oven is preheated properly and use the broiler for the last couple of minutes of baking. This creates a crispy crust without overcooking the spaghetti squash au gratin. Keep a close eye on it while broiling—things can change quickly! You can also sprinkle a bit of bread crumbs mixed with a touch of olive oil for added crunch.
These simple tips can elevate your spaghetti squash au gratin, making it an impressive dish you'll be proud to serve! For more inspiration, check out this article on simple vegetable side dishes or explore different ways to prepare squash through Bon Appétit.

Serving suggestions for Spaghetti Squash Au Gratin
Perfect pairings for a balanced meal
To create a well-rounded meal with your spaghetti squash au gratin, consider pairing it with grilled chicken or turkey bacon for a delicious protein boost. You might also enjoy it alongside a refreshing salad, like a simple arugula salad with lemon vinaigrette, which adds a peppery bite that contrasts beautifully with the rich creaminess of the gratin. For those times when you crave something a bit heartier, a side of roasted veggies can complement the dish while adding color and nutrients.
Creative ways to serve leftovers
Leftovers? No problem! The spaghetti squash au gratin can be transformed into tasty frittatas or breakfast burritos. Simply mix it with some eggs, pour it into a preheated skillet, and cook until set. You can also use it as a base for a savory bake by layering in extra veggies or lean meats. Lastly, spooning it over a baked potato or stuffed in a whole wheat wrap can offer a delightful twist that keeps meals interesting throughout the week!
For more inspiration, consider browsing recipes from trusted sources like Food Network or AllRecipes.
Time Breakdown for Spaghetti Squash Au Gratin
Preparation Time
You’ll need about 15 minutes to prepare your ingredients. This includes halving and seeding the spaghetti squash, slicing the onion, and gathering your seasonings. Quick and easy—perfect for busy weeknights!
Cooking Time
The cooking process takes around 30 minutes, which consists of microwaving the spaghetti squash, sautéing the onion, and baking the au gratin until it’s golden and bubbly. Just enough time to catch up on your favorite show!
Total Time
In total, you’ll invest about 45 minutes from start to finish. This means you can whip up a delicious, healthy side dish to accompany your main course without spending all evening in the kitchen. What’s not to love?
If you want to learn more about the health benefits of spaghetti squash, check out this nutrition overview. Give it a try and impress your friends and family!
Nutritional Facts for Spaghetti Squash Au Gratin
When savoring spaghetti squash au gratin, it's helpful to know what you're fueling your body with. Here’s a quick breakdown of the key nutritional facts:
Calories
Each serving boasts about 115 calories, making this dish a light yet satisfying option.
Carbohydrates
With just 11 grams of carbohydrates, it's a fantastic choice for those following a lower-carb diet without sacrificing flavor.
Protein
This dish provides 8 grams of protein, thanks to the sour cream and cheese, aiding in satiety and muscle health.
For more detailed information and benefits of spaghetti squash, check out resources such as the USDA FoodData Central for insights on nutrition and health.
FAQs about Spaghetti Squash Au Gratin
Can I use other types of cheese?
Absolutely! The beauty of spaghetti squash au gratin lies in its versatility. If you're a fan of creamier cheese, consider using mozzarella or Gouda for a richer texture. For a bolder flavor, sharp cheddar or feta make excellent alternatives. Just keep in mind that using different cheeses may slightly alter the dish's flavor profile, so feel free to experiment until you find your perfect combination.
How can I make it spicier?
If you enjoy a kick of heat, there are plenty of ways to spice up your spaghetti squash au gratin. You can increase the red pepper flakes to suit your taste or add some diced jalapeños or crushed chili peppers for an extra punch. A sprinkle of cayenne pepper or hot sauce can also elevate the spice level. Just remember, a little goes a long way!
What other veggies can I add?
This dish is an excellent canvas for additional veggies! You might consider incorporating sautéed mushrooms, spinach, or bell peppers for added color and nutrition. Broccoli or zucchini can also blend seamlessly into the mix, making your spaghetti squash au gratin even more hearty and satisfying. The key is to cook any veggies beforehand so they release excess moisture and don’t affect the final texture.
For more veggie inspiration, check out this guide on using squash in your cooking adventures!
Conclusion on Spaghetti Squash Au Gratin
In summary, spaghetti squash au gratin is an excellent, healthier alternative to traditional side dishes. Its creamy, cheesy goodness satisfies even the pickiest eaters, making it perfect for family dinners. Give this recipe a try, and you may just find it becomes a new favorite on your table!

Spaghetti Squash Au Gratin
Equipment
- microwave
- Skillet
- baking dish
Ingredients
Vegetables
- 1 medium spaghetti squash halved and seeded
- 1 small yellow onion thinly sliced
Dairy
- 3 tablespoons light margarine
- ¾ cup fat-free sour cream
- 1 cup shredded light Cheddar cheese
Spices
- 1 teaspoon red pepper flakes
- ¼ teaspoon garlic powder
- salt to taste
- freshly ground black pepper to taste
Other
- cooking spray for greasing the baking dish
Instructions
Preparation
- Place spaghetti squash in a covered dish and add ¼ inch of water. Microwave for 10 to 12 minutes. Scrape insides of squash with a fork and transfer to a small bowl.
- Heat margarine in a medium skillet over medium heat while spaghetti squash is cooking and cook onion, red pepper flakes, garlic powder, salt, and pepper until the onion is browned, 5 to 10 minutes.
- Preheat the oven to 375 degrees F (190 degrees C). Grease a baking dish with nonstick cooking spray.
- Mix spaghetti squash, onion mixture, sour cream, and ½ of the Cheddar cheese together. Transfer to the prepared baking dish and top with remaining Cheddar cheese.
- Bake in the preheated oven for 20 to 25 minutes. Turn on broiler for the last 2 to 3 minutes and broil until gratin is golden brown on top.





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