Healthy Spaghetti Squash Au Gratin
This Healthy Spaghetti Squash Au Gratin is the kind of cozy-meets-clean dish we all need in our back pocket. It’s rich and cheesy, but naturally low-carb, gluten-free, and veggie-packed. Perfect for weeknight dinners or special occasions, this dish brings comfort to your table while keeping it healthy. With roasted spaghetti squash, creamy yogurt, and sharp cheddar baked to perfection, you’ll find this recipe hits all the right notes!
Why You’ll Love This Recipe
- Easy to Prepare: This recipe requires minimal hands-on time. Just roast the squash and mix!
- Flavorful and Satisfying: The combination of cheese and creamy yogurt creates a rich taste that delights.
- Versatile Dish: Enjoy it as a side or make it a light main course; it’s perfect for any meal.
- Healthy Alternative: Low-carb and gluten-free, it fits into various dietary lifestyles without sacrificing flavor.
- Great for Meal Prep: Make ahead of time and reheat for quick lunches or dinners throughout the week.

Tools and Preparation
To make your Healthy Spaghetti Squash Au Gratin successful, gather these essential tools. Having the right equipment can streamline your cooking process.
Essential Tools and Equipment
- Baking sheet
- Skillet
- Casserole dish
- Fork
- Mixing bowl
Importance of Each Tool
- Baking sheet: Ideal for roasting the spaghetti squash evenly until tender.
- Skillet: Perfect for sautéing onions and garlic to enhance their flavors before mixing.
- Casserole dish: Ensures even baking, allowing your gratin to develop a bubbly, golden top.
Ingredients
For the Spaghetti Squash Au Gratin
- 1 medium spaghetti squash
- 1 tbsp olive oil
- ½ cup diced onion
- 2 cloves garlic (minced)
- ½ cup plain Greek yogurt (or sour cream)
- 1½ cups shredded sharp cheddar cheese (divided)
- ¼ tsp salt
- ¼ tsp black pepper
- Optional: ¼ tsp paprika or dried thyme
How to Make Healthy Spaghetti Squash Au Gratin
Step 1: Preheat the Oven
Preheat your oven to 400°F (205°C). This temperature is perfect for roasting the spaghetti squash.
Step 2: Roast the Spaghetti Squash
- Slice the spaghetti squash in half lengthwise.
- Scoop out the seeds using a spoon.
- Brush the cut sides with olive oil.
- Place the squash face-down on a baking sheet.
- Roast in the oven for 35–40 minutes or until tender.
Step 3: Sauté Onions and Garlic
- Heat a skillet over medium heat.
- Add a bit of olive oil to the skillet.
- Sauté diced onions until softened (about 5 minutes).
- Add minced garlic and cook for an additional minute before removing from heat.
Step 4: Shred the Squash
Once the squash is cool enough to handle:
1. Use a fork to shred it into noodle-like strands.
2. Place shredded squash into a large mixing bowl.
Step 5: Combine Ingredients
In your mixing bowl with shredded squash:
1. Add sautéed onions and garlic.
2. Mix in Greek yogurt, 1 cup of shredded cheese, salt, pepper, and optional spices like paprika or thyme.
Step 6: Transfer to Casserole Dish
- Grease your casserole dish lightly.
- Transfer the mixture from your bowl into the greased dish.
- Top with remaining ½ cup of shredded cheese.
Step 7: Bake Until Golden
Bake at 375°F (190°C) for 20–25 minutes:
1. Look for it to be hot and bubbly with a golden top.
Step 8: Serve
Let cool slightly before serving this delightful dish! Enjoy your Healthy Spaghetti Squash Au Gratin as a side or light main course!
How to Serve Healthy Spaghetti Squash Au Gratin
Healthy Spaghetti Squash Au Gratin is a versatile dish that can complement various meals. Its creamy texture and cheesy flavor make it a delightful addition to any table. Here are some suggestions on how to serve this delicious dish.
As a Main Dish
- Enjoy it alone: This dish can stand alone as a light main course, especially for vegetarian meals.
- Pair with salad: Serve with a fresh garden salad for a balanced meal rich in veggies.
As a Side Dish
- Accompany roasted meats: The cheesy goodness pairs well with roasted chicken, pork, or beef.
- Serve alongside seafood: It complements grilled fish or shrimp beautifully.
For Special Occasions
- Holiday gatherings: This dish is perfect for Thanksgiving or Christmas as a comforting side.
- Potlucks and gatherings: Bring it to your next potluck; it’s sure to be a hit!
How to Perfect Healthy Spaghetti Squash Au Gratin
To ensure your Healthy Spaghetti Squash Au Gratin turns out perfectly every time, consider these helpful tips. They will elevate your dish and enhance its flavors.
- Choose the right squash: Select a medium-sized spaghetti squash that feels heavy for its size; this indicates ripeness.
- Don’t rush roasting: Properly roast the spaghetti squash to achieve the right texture; undercooked squash will be watery.
- Season generously: Adjust salt and pepper according to your taste; feel free to add more spices for extra flavor.
- Use fresh ingredients: Fresh garlic and high-quality cheese will significantly enhance the overall taste of the gratin.
- Let it rest: Allow the dish to cool slightly before serving; this helps set the flavors and prevents burns.
Best Side Dishes for Healthy Spaghetti Squash Au Gratin
When planning your meal, consider these complementary side dishes that pair wonderfully with Healthy Spaghetti Squash Au Gratin. They enhance the dining experience without overpowering the main dish.
- Garlic Bread: Crispy garlic bread adds crunch and flavor, making it an ideal pairing with creamy dishes.
- Roasted Vegetables: A mix of seasonal veggies roasted with herbs provides color and nutrition on your plate.
- Caesar Salad: This classic salad offers a refreshing contrast with its crisp romaine and tangy dressing.
- Quinoa Pilaf: Nutty quinoa adds protein and fiber while complementing the cheesiness of the gratin.
- Steamed Broccoli: Simple steamed broccoli brings a bright green touch and health benefits alongside the rich gratin.
- Balsamic Glazed Brussels Sprouts: The sweetness of balsamic glaze enhances the flavors while adding more veggies to your meal.
Common Mistakes to Avoid
When making Healthy Spaghetti Squash Au Gratin, it’s easy to make a few common errors. Here are some mistakes to watch out for:
- Not roasting the squash properly: Ensure you roast the spaghetti squash until it’s tender. Undercooking can lead to crunchy strands that don’t blend well with the dish.
- Skipping the seasoning: Don’t forget to season your mixture adequately. A pinch of salt and pepper enhances the overall flavor and makes it more enjoyable.
- Using low-quality cheese: Opt for high-quality sharp cheddar cheese. It melts better and adds a rich, creamy texture that elevates your gratin.
- Overpacking the casserole dish: Make sure not to overcrowd your casserole dish. This can prevent even cooking and lead to uneven textures in your gratin.
- Ignoring cooling time: Allow the dish to cool slightly before serving. This helps it set up nicely, making it easier to serve and enjoy.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftovers in an airtight container.
- Healthy Spaghetti Squash Au Gratin can last up to 3 days in the fridge.
Freezing Healthy Spaghetti Squash Au Gratin
- Place portions in freezer-safe containers.
- It can be frozen for up to 2 months for best quality.
Reheating Healthy Spaghetti Squash Au Gratin
- Oven: Preheat to 350°F (175°C). Cover with foil and heat for about 20 minutes until warmed through.
- Microwave: Use a microwave-safe dish, heating on medium power for 2-3 minutes, stirring halfway through.
- Stovetop: Heat in a skillet over medium-low heat, stirring occasionally until hot.
Frequently Asked Questions
If you’re curious about any details regarding this recipe, check out these frequently asked questions!
How do I choose a ripe spaghetti squash?
Look for a firm spaghetti squash with a uniform color. It should feel heavy for its size and have no soft spots.
Can I use other cheeses in Healthy Spaghetti Squash Au Gratin?
Absolutely! You can experiment with cheeses like mozzarella or gouda for different flavors and textures.
Is Healthy Spaghetti Squash Au Gratin suitable for meal prep?
Yes, this dish is great for meal prep as it stores well in both the refrigerator and freezer!
What can I serve with Healthy Spaghetti Squash Au Gratin?
This dish pairs well with protein options like grilled chicken or fish, or as part of a vegetarian spread.
Can I add more vegetables to this recipe?
Definitely! Feel free to add veggies like spinach or bell peppers for added nutrition and flavor.
Final Thoughts
Healthy Spaghetti Squash Au Gratin is a delightful twist on a classic comfort food. It’s perfect as a cozy side dish or light main course that everyone will love. Don’t hesitate to customize it with more vegetables or different cheese blends. Give it a try today!
Healthy Spaghetti Squash Au Gratin
Healthy Spaghetti Squash Au Gratin is a comforting and nutritious twist on a classic dish, making it perfect for both weeknight dinners and special occasions. This low-carb, gluten-free recipe is filled with roasted spaghetti squash, creamy Greek yogurt, and sharp cheddar cheese, all baked to a golden perfection. With minimal prep time and simple ingredients, this veggie-packed gratin delivers rich flavors without the guilt. Enjoy it as a light main course or a delightful side dish that pairs beautifully with meats or salads. Elevate your meal with this wholesome, satisfying recipe that everyone will love!
- Prep Time: 15 minutes
- Cook Time: 60 minutes
- Total Time: 1 hour 15 minutes
- Yield: About 6 servings 1x
- Category: Main Course
- Method: Baking
- Cuisine: American
Ingredients
- 1 medium spaghetti squash
- 1 tbsp olive oil
- ½ cup diced onion
- 2 cloves garlic (minced)
- ½ cup plain Greek yogurt
- 1½ cups shredded sharp cheddar cheese (divided)
- ¼ tsp salt
- ¼ tsp black pepper
- Optional: ¼ tsp paprika or dried thyme
Instructions
- Preheat oven to 400°F (205°C).
- Cut spaghetti squash in half lengthwise and scoop out seeds. Brush cut sides with olive oil and place face-down on a baking sheet. Roast for 35–40 minutes until tender.
- In a skillet over medium heat, sauté diced onions in olive oil until softened (about 5 minutes). Add minced garlic and cook for an additional minute.
- Once the squash cools, shred it into strands with a fork and combine in a mixing bowl with sautéed onions, garlic, Greek yogurt, 1 cup of cheese, salt, pepper, and optional spices.
- Transfer mixture to a greased casserole dish and top with remaining cheese. Bake at 375°F (190°C) for 20–25 minutes until hot and bubbly.
Nutrition
- Serving Size: 1 cup (150g)
- Calories: 180
- Sugar: 3g
- Sodium: 350mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 12g
- Fiber: 3g
- Protein: 11g
- Cholesterol: 30mg