Spaghetti Squash Au Gratin
This easy Spaghetti Squash Au Gratin is a comforting and wholesome dish that combines tender spaghetti squash strands with a creamy, garlic-infused cheese sauce, topped with a golden, melted crust. It offers a low-carb, vegetarian-friendly alternative to traditional au gratin casseroles and is perfect as a satisfying main or versatile side dish.
- Author: Emilly
- Prep Time: 15 minutes
- Cook Time: 1 hour (40 minutes roasting + 20-25 minutes baking)
- Total Time: 1 hour 15 minutes
- Yield: 4 servings 1x
- Category: Appetizers
- Method: Baking
- Cuisine: American
- Diet: Gluten Free
Main Ingredients
- 1 medium spaghetti squash
- 2 tablespoons butter
- 2 tablespoons all-purpose flour
- 2 cups whole milk
- 2 cloves garlic, minced
- 1 cup sharp cheddar cheese, grated
- 1/2 cup Parmesan cheese, grated
- Salt and pepper, to taste
- 1/2 cup bread crumbs (optional, for topping)
- Prepare the Spaghetti Squash: Preheat your oven to 400°F (200°C). Slice the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves cut-side down on a baking sheet lined with parchment paper. Roast for 40 minutes until the squash is tender. When cool enough to handle, use a fork to shred the flesh into spaghetti-like strands and set aside.
- Make the Cheese Sauce: In a medium saucepan, melt the butter over medium heat. Add the minced garlic and sauté until fragrant, about 1 minute. Stir in the flour and cook for 2 minutes, whisking constantly until bubbly and lightly golden. Gradually whisk in the milk and continue to cook and whisk until the sauce thickens, about 5 minutes.
- Combine Cheese and Season: Remove the sauce from heat and stir in the grated sharp cheddar and Parmesan cheese until melted and smooth. Season with salt and pepper to taste.
- Assemble and Bake: Gently fold the spaghetti squash strands into the cheese sauce. Transfer the mixture to a buttered baking dish. If desired, sprinkle bread crumbs on top for a crunchy crust. Bake in the preheated oven at 375°F (190°C) for 20-25 minutes until bubbly and golden brown on top.
Notes
- Don’t overcook the squash: Keep it tender but still firm for the best texture.
- Use whole milk for a creamier sauce.
- Grate cheese fresh to ensure better melting and smoothness.
- Season gradually to avoid over-salting the sauce.
- Let the dish rest for a few minutes after baking to set before serving.
Nutrition
- Serving Size: 1 cup
- Calories: 280 kcal
- Sugar: 6 g
- Sodium: 350 mg
- Fat: 16 g
- Saturated Fat: 10 g
- Unsaturated Fat: 5 g
- Trans Fat: 0 g
- Carbohydrates: 22 g
- Fiber: 3 g
- Protein: 12 g
- Cholesterol: 45 mg
Keywords: spaghetti squash, au gratin, low carb, vegetarian, cheesy casserole, healthy comfort food, gluten free