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Creamy Spaghetti Squash Au Gratin

Published: May 5, 2025 by Cheryl · This post may contain affiliate links · Leave a Comment

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This Creamy Spaghetti Squash Au Gratin is a delicious and comforting dish that brings together the savory flavors of garlic, cheese, and tender spaghetti squash. It's a perfect blend of creamy goodness with a slightly crispy, cheesy top. Whether you're looking for a low-carb alternative to traditional gratins or simply craving something comforting, this dish is sure to satisfy.

Creamy Spaghetti Squash Au Gratin

Ingredients

3 cups cooked spaghetti squash (pulled apart)

2 eggs

1 cup shredded mozzarella

½ cup plain Greek yogurt

2 tablespoons minced garlic

½ teaspoon dried thyme

Salt (to preference)

Pepper (to preference)

½ cup grated parmesan

(Tip: You'll find the full list of ingredients and measurements in the recipe card below.)

Directions

Preheat the oven to 375°F (190°C) and grease a baking dish.

In a large bowl, whisk together the eggs, Greek yogurt, mozzarella, garlic, dried thyme, salt, and pepper until well combined.

Add the cooked spaghetti squash to the bowl and toss until the squash is evenly coated with the creamy mixture.

Pour the squash mixture into the prepared baking dish and spread it out evenly.

Sprinkle the grated parmesan over the top for a golden, cheesy finish.

Bake for 25-30 minutes, or until the top is bubbly and lightly golden.

Let the dish cool for a few minutes before serving.

Servings and Timing

Prep time: 10 minutes

Cooking time: 30 minutes

Total time: 40 minutes

Servings: 4 servings

Variations

Add-ins: Feel free to mix in some cooked chicken, bacon, or sautéed spinach for added flavor and protein.

Herbs: If you want to switch things up, try adding fresh rosemary or oregano instead of thyme for a slightly different flavor profile.

Cheese: While mozzarella and parmesan are classic choices, you could experiment with other cheeses like cheddar or Gruyère for a different cheesy taste.

Storage/Reheating

Storage: Leftovers can be stored in an airtight container in the fridge for up to 3 days.

Reheating: To reheat, simply place the dish in the oven at 350°F (175°C) for 10-15 minutes, or until heated through. You can also reheat individual portions in the microwave for 1-2 minutes.

FAQs

Can I make this recipe ahead of time?

Yes, you can prep this dish ahead of time! Simply assemble the squash mixture in the baking dish, cover with plastic wrap, and store it in the fridge for up to 24 hours before baking. When ready to bake, simply remove the dish from the fridge and proceed with the baking instructions.

Can I use frozen spaghetti squash?

Yes, you can use frozen spaghetti squash. Just make sure it is fully thawed and drained of any excess moisture before using it in the recipe to ensure the gratin isn't too watery.

Can I make this dish dairy-free?

To make this recipe dairy-free, you can substitute the mozzarella with a dairy-free cheese and use a non-dairy yogurt. Just be sure to choose a cheese that melts well for the best texture.

Can I add more vegetables to the dish?

Absolutely! Feel free to add sautéed vegetables such as mushrooms, spinach, or bell peppers to give the dish even more flavor and texture.

How do I prevent the gratin from being too watery?

The key to preventing a watery gratin is to make sure the spaghetti squash is well-drained after it’s cooked. You can use a clean kitchen towel or paper towels to blot any excess moisture from the squash before mixing it with the creamy ingredients.

Conclusion

This Creamy Spaghetti Squash Au Gratin is a fantastic dish that combines comfort and flavor in a healthy, low-carb way. The creamy texture, savory garlic, and cheese are perfectly balanced, making it a satisfying alternative to heavier gratins. It’s quick, simple, and versatile, so whether you're enjoying it on its own or as a side dish, it’s bound to be a hit.


Recipe:

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Creamy Spaghetti Squash Au Gratin

Creamy Spaghetti Squash Au Gratin


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  • Author: Cheryl
  • Total Time: 40 minutes
  • Yield: 4 servings
  • Diet: Low Calorie
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Description

A creamy, comforting low-carb gratin made with spaghetti squash, garlic, mozzarella, and Greek yogurt, with a crispy, cheesy top.


Ingredients

3 cups cooked spaghetti squash (pulled apart)

2 eggs

1 cup shredded mozzarella

½ cup plain Greek yogurt

2 tablespoons minced garlic

½ teaspoon dried thyme

Salt (to preference)

Pepper (to preference)

½ cup grated parmesan


Instructions

  1. Preheat the oven to 375°F (190°C) and grease a baking dish.
  2. In a large bowl, whisk together the eggs, Greek yogurt, mozzarella, garlic, dried thyme, salt, and pepper until well combined.
  3. Add the cooked spaghetti squash to the bowl and toss until the squash is evenly coated with the creamy mixture.
  4. Pour the squash mixture into the prepared baking dish and spread it out evenly.
  5. Sprinkle the grated parmesan over the top for a golden, cheesy finish.
  6. Bake for 25-30 minutes, or until the top is bubbly and lightly golden.
  7. Let the dish cool for a few minutes before serving.

Notes

Leftovers can be stored in an airtight container in the fridge for up to 3 days.

Reheat by placing in the oven at 350°F (175°C) for 10-15 minutes or microwaving individual portions for 1-2 minutes.

This dish can be made ahead of time and stored in the fridge for up to 24 hours before baking.

To prevent the gratin from being too watery, make sure the spaghetti squash is well-drained after cooking.

  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Category: Side dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 220
  • Sugar: 3g
  • Sodium: 350mg
  • Fat: 14g
  • Saturated Fat: 6g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 10g
  • Fiber: 2g
  • Protein: 12g
  • Cholesterol: 120mg

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Hey there! I’m Cheryl and if there’s one thing I’ve learned, it’s that food has a way of bringing people together.

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