Spaghetti Squash Gratin Healthy transforms simple spaghetti squash into a luxurious and satisfying au gratin. This recipe offers a delicious, comforting, and healthy meal option perfect for families. With its creamy cheese sauce and veggie-packed goodness, it’s the ideal dish for anyone looking to enjoy a guilt-free indulgence. Let’s dive into this tasty recipe that everyone will love!
Why You’ll Love This Spaghetti Squash Gratin Healthy
This nutritious spaghetti squash gratin is not just a meal; it’s a celebration of flavors and health! Here are a few reasons why this dish is a must-try:
- Low-calorie spaghetti squash dish that satisfies cravings.
- Easy healthy spaghetti squash recipes for busy weeknights.
- Vegetarian-friendly, perfect for meatless dinners.
- Features creamy cheese that makes it a comforting dish.
- Great for weight loss with portion control and healthy ingredients.
- It’s a gluten-free spaghetti squash gratin, accommodating various diets.
Ingredients for Spaghetti Squash Gratin Healthy
Gather these items:
- 1 large spaghetti squash (about 3-4 pounds)
- 4 tablespoons unsalted butter, divided
- 1 medium yellow onion, finely chopped
- 2 cloves garlic, minced
- 4 tablespoons all-purpose flour
- 3 cups whole milk
- 1/2 teaspoon salt, plus more to taste
- 1/4 teaspoon black pepper, plus more to taste
- 1/4 teaspoon nutmeg
- 1 cup grated Gruyere cheese, divided
- 1 cup grated sharp cheddar cheese, divided
- 1/2 cup grated Parmesan cheese, divided
- 1/4 cup panko breadcrumbs
- 2 tablespoons chopped fresh parsley, for garnish (optional)
How to Make Spaghetti Squash Gratin Healthy Step-by-Step
- Step 1: Preheat the oven to 400°F (200°C). Cut the spaghetti squash in half lengthwise and scoop out the seeds. Season the cut sides with salt and pepper. Place cut-side down on a parchment-lined baking sheet. Roast for 45-60 minutes until fork-tender. Let cool slightly, then scrape the flesh into spaghetti-like strands. Transfer strands to a colander and drain for 15-20 minutes to remove excess moisture.
- Step 2: While the squash drains, melt 2 tablespoons of unsalted butter in a medium saucepan over medium heat. Add the finely chopped yellow onion and minced garlic; cook for 3-5 minutes until softened and fragrant. Sprinkle in 4 tablespoons of all-purpose flour and whisk for 1-2 minutes to create a pale golden roux. Gradually whisk in 3 cups of warmed whole milk until smooth. Bring to a gentle simmer, stirring frequently, and cook for 3-5 minutes until thickened. Remove from heat. Stir in 1/2 teaspoon salt, 1/4 teaspoon black pepper, and 1/4 teaspoon nutmeg. Add 3/4 cup each of Gruyere and sharp cheddar, and 1/4 cup of Parmesan cheese; stir until completely melted and the sauce is smooth and creamy. Reserve the remaining cheese for topping.
- Step 3: Preheat the oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish. In a large bowl, combine the drained spaghetti squash strands with the creamy cheese sauce, tossing until thoroughly coated. Transfer the mixture to the prepared baking dish, spreading evenly. In a small bowl, combine 1/4 cup panko breadcrumbs with the remaining 2 tablespoons melted unsalted butter. Sprinkle the remaining reserved cheeses (1/4 cup Gruyere, 1/4 cup sharp cheddar, and 1/4 cup Parmesan) evenly over the squash mixture, then top with the buttered panko breadcrumbs.
- Step 4: Bake for 25-35 minutes, or until the gratin is bubbly around the edges and the breadcrumb topping is beautifully golden brown and crisp. If browning too quickly, loosely tent with aluminum foil. Carefully remove from the oven and allow to rest for 10-15 minutes before serving. Garnish with fresh chopped parsley if desired. Enjoy this comforting dish!
Pro Tips for the Best Spaghetti Squash Gratin Healthy
Keep these in mind:
- To enhance the flavor, consider adding herbs like thyme or rosemary into the cheese sauce.
- Make sure to drain the spaghetti squash well to avoid a watery gratin.
- This dish can be made ahead of time and baked before serving.
- For a lighter version, use almond milk instead of whole milk and reduce the cheese.
Best Ways to Serve Spaghetti Squash Gratin Healthy
Here are some serving ideas:
- Pair your gratin with a fresh side salad for a complete meal.
- Serve it alongside grilled chicken or fish for a protein boost.
- Top with extra herbs for a fresh finish.
How to Store and Reheat Spaghetti Squash Gratin Healthy
To store leftovers, keep the gratin in an airtight container in the refrigerator for up to 3 days. To reheat, place it in the oven at 350°F (175°C) for about 20 minutes until warmed through. This method keeps the topping crispy and delicious. This makes for an excellent meal prep option!
Frequently Asked Questions About Spaghetti Squash Gratin Healthy
What is spaghetti squash gratin?
Spaghetti squash gratin is a baked dish incorporating cooked spaghetti squash mixed with a creamy cheese sauce, often topped with breadcrumbs for a crunchy finish. This healthy spaghetti squash bake is a flavorful alternative to traditional casseroles.
Can I make spaghetti squash gratin healthy ahead of time?
Absolutely! You can prepare the gratin up to a day in advance and store it in the refrigerator. Just bake it when you’re ready to serve. This makes it a fantastic option for busy weeknights or gatherings!
How do I avoid common mistakes with spaghetti squash gratin healthy?
To avoid a soggy gratin, ensure that you drain the spaghetti squash thoroughly after cooking. Additionally, keep an eye on the baking time to prevent overcooking, which can lead to a dry texture.
Variations of Spaghetti Squash Gratin Healthy You Can Try
Here are some great variations to consider:
- Add sautéed vegetables like spinach or bell peppers to enhance nutrition and flavor.
- Incorporate lean ground turkey or chicken for a protein-packed version.
- Use different cheese blends, such as mozzarella or feta, for unique flavor profiles.
- Experiment with spices and herbs to create a signature dish that suits your taste!

For more delicious recipes, check out our Gingerbread Tiramisu or Honey Roasted Root Vegetables.

For more information on the health benefits of spaghetti squash, visit Healthline.
To learn more about cooking techniques, check out our Creamy Vegetable Soup recipe.
For a delightful dessert, try our Cranberry Custard Pie.
Finally, if you’re looking for a comforting meal, our One Pot Broccoli Cheese is a great option!
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Spaghetti Squash Gratin Healthy: 5 Comforting Variations
- Total Time: 2 hours 25 minutes
- Yield: 6 servings 1x
- Diet: Vegetarian
Description
Transforming simple spaghetti squash into a luxurious and satisfying au gratin, this recipe offers a delicious, comforting, and healthy meal option perfect for families.
Ingredients
- 1 large spaghetti squash (about 3–4 pounds)
- 4 tablespoons unsalted butter, divided
- 1 medium yellow onion, finely chopped
- 2 cloves garlic, minced
- 4 tablespoons all-purpose flour
- 3 cups whole milk
- 1/2 teaspoon salt, plus more to taste
- 1/4 teaspoon black pepper, plus more to taste
- 1/4 teaspoon nutmeg
- 1 cup grated Gruyere cheese, divided
- 1 cup grated sharp cheddar cheese, divided
- 1/2 cup grated Parmesan cheese, divided
- 1/4 cup panko breadcrumbs
- 2 tablespoons chopped fresh parsley, for garnish (optional)
Instructions
- Preheat oven to 400°F (200°C). Cut 1 large spaghetti squash in half lengthwise and scoop out seeds. Season cut sides with salt and pepper. Place cut-side down on a parchment-lined baking sheet. Roast for 45-60 minutes until fork-tender. Let cool slightly, then scrape flesh into spaghetti-like strands. Transfer strands to a colander and drain for 15-20 minutes to remove excess moisture.
- While squash drains, melt 2 tablespoons unsalted butter in a medium saucepan over medium heat. Add finely chopped yellow onion and minced garlic; cook for 3-5 minutes until softened and fragrant. Sprinkle in 4 tablespoons all-purpose flour and whisk for 1-2 minutes to create a pale golden roux. Gradually whisk in 3 cups warmed whole milk until smooth. Bring to a gentle simmer, stirring frequently, and cook for 3-5 minutes until thickened. Remove from heat. Stir in 1/2 teaspoon salt, 1/4 teaspoon black pepper, and 1/4 teaspoon nutmeg. Add 3/4 cup Gruyere, 3/4 cup sharp cheddar, and 1/4 cup Parmesan cheese; stir until completely melted and the sauce is smooth and creamy. Reserve the remaining cheese for topping.
- Preheat oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish. In a large bowl, combine the drained spaghetti squash strands with the creamy cheese sauce, tossing until thoroughly coated. Transfer the mixture to the prepared baking dish, spreading evenly. In a small bowl, combine 1/4 cup panko breadcrumbs with the remaining 2 tablespoons melted unsalted butter. Sprinkle the remaining reserved cheeses (1/4 cup Gruyere, 1/4 cup sharp cheddar, and 1/4 cup Parmesan) evenly over the squash mixture, then top with the buttered panko breadcrumbs.
- Bake for 25-35 minutes, or until the au gratin is bubbly around the edges and the breadcrumb topping is beautifully golden brown and crisp. If browning too quickly, loosely tent with aluminum foil. Carefully remove from oven and allow to rest for 10-15 minutes before serving. Garnish with fresh chopped parsley, if desired. Serve hot and enjoy this satisfying dish.
Notes
- Prep Time: 45 minutes
- Cook Time: 1 hour 40 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sugar: 5g
- Sodium: 600mg
- Fat: 20g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 4g
- Protein: 15g
- Cholesterol: 60mg
