Spaghetti Squash Gratin Recipe

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Theda Modified: November 19, 2021
Spaghetti Squash Gratin Recipe

How To Make Spaghetti Squash Gratin

This squash gratin is a creamy vegetarian dish that will surely fill you up. It has marinara sauce, spaghetti squash, and a blend of Italian cheeses.

Preparation: 5 minutes
Cooking: 1 hour 15 minutes
Total: 1 hour 20 minutes



  • lbsspaghetti squash
  • 1tbspextra virgin olive oil
  • cupsjarred marinara sauce
  • 1tspsalt
  • ½tspground black pepper
  • tspfresh thyme,(or ½ tsp dried), chopped
  • 1cupItalian cheese blend,shredded, (such as Fontina, Asiago and Parmesan)
  • 1tbspbutter,melted
  • ½cuppanko bread crumbs
  • freshly grated Parmigiano-Reggiano,for serving


  1. Preheat oven to 425 degrees F.

  2. Fill a large pot with about 2 inches of water and bring it to a simmer. Place the spaghetti squash in the pot, cover with a lid and simmer, turning once, for 30 to 40 minutes, or until the squash is tender and easily pierced with a fork. Let cool.

  3. Cut the squash in half and remove the seeds. Use a spoon to scoop out the flesh, being careful not to shred the strands (it is best to go from side to side, rather than lengthwise). Place the strands in large bowl.

  4. Add the extra virgin olive oil, marinara sauce, salt, pepper, and thyme to the bowl and toss gently until squash is well coated with the sauce.

  5. Taste and add more salt if necessary. Transfer the mixture to a 9×13-inch baking dish. Sprinkle the grated cheese evenly over top.

  6. Combine the melted butter with the panko and sprinkle evenly over the top of the cheese. Bake for 25 to 35 minutes, or until the top is golden.

  7. Serve with grated Parmesan cheese.


  • Calories: 431.33kcal
  • Fat: 22.29g
  • Saturated Fat: 9.48g
  • Trans Fat: 0.51g
  • Monounsaturated Fat: 6.64g
  • Polyunsaturated Fat: 2.75g
  • Carbohydrates: 49.91g
  • Fiber: 10.09g
  • Sugar: 20.77g
  • Protein: 13.62g
  • Cholesterol: 43.60mg
  • Sodium: 1375.85mg
  • Calcium: 389.37mg
  • Potassium: 951.29mg
  • Iron: 2.72mg
  • Vitamin A: 180.60µg
  • Vitamin C: 13.51mg
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