Introduction to Spaghetti Squash Au Gratin
If you’re on the hunt for a deliciously different side dish, look no further than spaghetti squash au gratin. This creative recipe takes the humble spaghetti squash—a nutrient-rich, low-carb vegetable—and turns it into a creamy, cheesy delight. But why is spaghetti squash such a game-changer for healthy eaters?
Why spaghetti squash is a game-changer for healthy eaters
Spaghetti squash isn’t just a trendy vegetable. It’s packed with vitamins, low in calories, and can be a fantastic substitute for traditional pasta or potatoes. One cup of cooked spaghetti squash has about 42 calories and is rich in antioxidants, making it a smart addition to any balanced diet. According to Healthline, spaghetti squash is high in fiber, which is great for digestion and keeping you full longer. Plus, its subtle flavor allows it to soak up any delicious sauce or seasoning you want to throw at it, making it incredibly versatile.
When paired with shredded cheese and a light creamy sauce, as in our spaghetti squash au gratin recipe, you get a hearty, satisfying dish that doesn't compromise your health goals. Trust me, even the pickiest eaters will be asking for seconds! So let’s dive into this delightful recipe that’s perfect for any occasion.

Ingredients for Spaghetti Squash Au Gratin
Essential ingredients for a delicious au gratin
Creating a mouthwatering spaghetti squash au gratin starts with a handful of essential ingredients that marry beautifully together. Here's what you need:
- 1 spaghetti squash: The star of the dish, which acts as a fantastic low-carb alternative.
- 3 tablespoons light margarine: Adds richness without overwhelming calories.
- 1 small yellow onion: Provides sweetness and depth of flavor.
- 1 teaspoon red pepper flakes: Offers a subtle kick, balancing the creamy taste.
- ¼ teaspoon garlic powder: Elevates the savory notes.
- Salt and freshly ground black pepper: Essential for seasoning to your preference.
- ¾ cup fat-free sour cream: Creates a creamy texture while keeping it healthier.
- 1 cup shredded light Cheddar cheese: The perfect topping to become bubbly and golden.
Optional ingredients you can add for extra flavor
Feeling adventurous? You can elevate your spaghetti squash au gratin with these optional ingredients:
- Turkey bacon or chicken ham: For a protein boost and savory richness.
- Sautéed mushrooms: Adding earthy flavors that complement the squash beautifully.
- Parmesan cheese: Sprinkling some on top for an extra cheesy crust.
- Fresh herbs: Consider adding chives or parsley for a fresh finish.
These slight variations can really personalize your dish. Check out more ideas on how to experiment with your au gratin here. Make sure to keep it fun and enjoy the process of cooking!
Preparing Spaghetti Squash Au Gratin
Making spaghetti squash au gratin is an exciting culinary adventure that combines the goodness of vegetables with a creamy, cheesy twist. This dish not only serves as a delightful side but can also shine as a vegetarian main. Here’s how to bring this scrumptious dish to life, step by step!
Preparing the spaghetti squash
Start with the spaghetti squash, the star of your dish. Carefully cut the squash in half lengthwise and scoop out the seeds. It's best to use a sharp knife; it can be a bit tricky! To soften the squash, place it in a microwave-safe dish with about a quarter inch of water and cover it. Microwave it on high for 10 to 12 minutes, checking to ensure it's tender. When done, take it out (be cautious, it will be hot!) and use a fork to scrape out the insides. The strands will resemble spaghetti, hence the name! You can transfer these to a small mixing bowl, where they will await their flavorful transformation.
Sautéing the onion mixture
While your squash is cooking, heat 3 tablespoons of light margarine in a medium skillet over medium heat. Add a thinly sliced small yellow onion along with 1 teaspoon of red pepper flakes and ¼ teaspoon of garlic powder. Season it with salt and freshly ground black pepper to taste. Sauté the mixture until the onions are beautifully browned and fragrant; this should take about 5 to 10 minutes. Not only does this step add depth to the spaghetti squash au gratin, but the aroma will probably make your kitchen smell divine!
Mixing ingredients in a bowl
Once your onion mixture and spaghetti squash are ready, it’s time to combine them. In your bowl with the spaghetti squash, mix in the sautéed onions, ¾ cup of fat-free sour cream, and half of your shredded light Cheddar cheese. The melty cheese makes everything come together beautifully and enhances the flavor profile. This is really where the magic happens—it's a fabulous blend of textures and tastes!
Transferring to the baking dish
Preheat your oven to 375 degrees F (190 degrees C). While the oven heats, grab a baking dish and coat it with nonstick cooking spray. Pour your mixture into the prepared dish and then sprinkle the remaining cheese on top. This cheesy crust will create a perfect golden brown top as it bakes.
Baking to perfection
Now for the best part—baking! Place your baking dish in the oven and let it bake for 20 to 25 minutes. For that irresistible crispiness, turn on the broiler for the last 2 to 3 minutes, but keep a close eye to avoid burning. When it’s finished, you should see a glorious golden top. Serve your spaghetti squash au gratin hot from the oven and enjoy a healthier twist on the classic gratin!
Now that you know how to prepare this delicious dish, why not give it a try? You might just discover a new family favorite!

Variations on Spaghetti Squash Au Gratin
Adding proteins for a complete meal
Transform your spaghetti squash au gratin into a hearty dish by incorporating proteins! Consider adding diced Turkey Bacon or Chicken Ham for a rich, savory flavor. You can even toss in shredded rotisserie chicken or cooked shrimp for an extra boost. These additions not only elevate the taste but also enhance the nutritional value, making it a well-rounded meal.
Incorporating different spices for a flavor twist
Spice it up! Experimenting with spices can significantly alter your spaghetti squash au gratin experience. Try adding a touch of smoked paprika for a warm depth, or sprinkle in some Italian seasoning for a classic vibe. If you're feeling adventurous, a pinch of cumin or curry powder can bring a unique twist that surprises your taste buds.
For more creative ideas, check out this pro chef's guide to spices and expand your culinary horizons!
Cooking tips and notes for Spaghetti Squash Au Gratin
Best practices for cooking squash
Spaghetti squash is not just a clever name; its texture can mimic pasta once cooked! To get the best results, pierce the squash's skin before microwaving. This helps steam escape and ensures even cooking. Another handy tip is to give the squash a little twist while scraping out the insides to separate the strands effectively. Need more detailed instructions? Check out this helpful guide on how to cook spaghetti squash here.
How to achieve that perfect golden top
To elevate your spaghetti squash au gratin, achieving a perfect golden crust is key. Start by evenly distributing your cheese on top of the mixture. For an extra crispy finish, broil for the last few minutes of baking, keeping a close eye to prevent burning. Using freshly grated cheese can also boost flavor and crispiness, making it a crowd-pleaser every time!
These tips will help you create a delicious, eye-catching dish that delights both you and your dinner guests!

Serving suggestions for Spaghetti Squash Au Gratin
Pairing with proteins for a balanced meal
To create a deliciously balanced meal, consider serving your spaghetti squash au gratin alongside a protein source. Options like grilled chicken breast or turkey bacon bring a savory element to the dish while keeping it light. You might also try a veggie burger for a plant-based twist! These proteins complement the creaminess of the gratin and enhance the overall flavor profile, making it both satisfying and nutritious.
Creative ways to present your dish
How you present your spaghetti squash au gratin can elevate your dining experience. Consider serving it in individual ramekins for a charming touch, perfect for entertaining. Sprinkling chopped fresh herbs like parsley or chives adds a pop of color and freshness. For an extra layer of flavor, drizzle a bit of balsamic reduction on top right before serving. This simple enhancement will impress your guests and makes the dish feel special. Check out The Kitchn for more creative serving ideas!
Time Breakdown for Spaghetti Squash Au Gratin
When you’re craving a delicious yet healthy dish, this spaghetti squash au gratin is a winner! Here’s a quick look at how long it takes to whip up this delightful recipe.
Preparation Time
Get ready in just 15 minutes! This includes halving and seeding the spaghetti squash, slicing the onions, and gathering your ingredients.
Cooking Time
After you prep, the cooking takes around 30 minutes. This includes microwaving the squash, sautéing the onions, and baking the gratin until golden.
Total Time
In just 45 minutes, you'll enjoy a hearty, lower-carb side dish that's sure to impress. Perfect for busy weeknights or as a crowd-pleaser at dinner parties!
For more tips on meal prep and delicious low-carb recipes, check out resources like Healthline and Food Network.
Nutritional Facts for Spaghetti Squash Au Gratin
Calories
In each serving of spaghetti squash au gratin, you'll find just 115 calories, making it a smart choice for a satisfying side dish without derailing your dietary goals.
Protein
This dish packs in 8 grams of protein per serving, thanks to the combination of fat-free sour cream and cheese. It’s a great option for those seeking a protein boost while enjoying a hearty meal.
Sodium
Be mindful of the sodium content, which stands at 265 mg per serving. This makes it a reasonably low-sodium option, especially when compared to traditional gratin recipes. For more detailed nutrition insights, check out sources like the USDA FoodData Central.
By choosing spaghetti squash au gratin, you're not only delighting your taste buds but also making a nutritious choice. It’s an excellent way to incorporate more veggies into your diet!
FAQs about Spaghetti Squash Au Gratin
Can I make this recipe dairy-free?
Absolutely! To whip up a dairy-free spaghetti squash au gratin, consider swapping out the fat-free sour cream for a plant-based alternative like cashew cream or coconut yogurt. For the cheese, you can use dairy-free cheese shreds, which melt nicely and provide that gooey texture we all love in a gratin. It’s a delicious way to enjoy this dish without the dairy!
What other vegetables work well in au gratin?
While spaghetti squash steals the spotlight in this recipe, other veggies can shine too! Think about adding sautéed mushrooms, broccoli florets, or even zucchini. Each will impart a unique flavor and texture, making your au gratin even more delightful. For additional inspiration, check out this Vegetable Gratin Guide for crafting a mix that suits your palate.
How can I store leftovers of this dish?
Storing leftovers is easy! Once cooled, transfer your spaghetti squash au gratin to an airtight container and refrigerate. It should stay fresh for about 3-4 days. For longer storage, consider freezing it! Just ensure it’s in a freezer-safe container. When you're ready to enjoy it again, thaw it overnight in the fridge before reheating in the oven for that deliciously crispy top.
Conclusion on Spaghetti Squash Au Gratin
Spaghetti squash au gratin is a deliciously creamy, satisfying dish that's perfect for those seeking a healthier alternative to traditional gratin recipes. Easy to make and packed with flavor, it's a dish that even picky eaters, like my meat-and-potatoes husband, will love. Give it a try for your next family meal!

Spaghetti Squash Au Gratin
Equipment
- microwave
- skillet
- Baking dish
Ingredients
- 1 spaghetti squash, halved and seeded
- 3 tablespoons light margarine
- 1 small yellow onion, thinly sliced
- 1 teaspoon red pepper flakes
- ¼ teaspoon garlic powder
- salt and freshly ground black pepper to taste
- ¾ cup fat-free sour cream
- 1 cup shredded light Cheddar cheese
- cooking spray
Instructions
- 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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