Best Spaghetti Squash Casserole

This dish is better than traditional pasta! Try it and you’ll see!

I am officially obsessed with this recipe, eating it for breakfast, lunch and dinner! It’s a perfect replacement for heavy pasta dishes that leave you feeling sluggish. Spaghetti squash contains omega-3 essential fatty acids, good for preventing heart disease, cancer and inflammation caused by arthritis, and omega-6 fatty acids which promotes brain function. Imagine that — a ‘pasta’ dish that is packed with many vitamins and minerals, which are required for proper functioning of the body. Almost too good to be true. Now you see why I’m obsessed 🙂

Best Spaghetti Squash Casserole
A Recipe by Diana Keuilian
Prep time
Cook time
Total time
Serves 8

  • 1 spaghetti squash
  • 1 tablespoon olive oil
  • 3 cloves garlic
  • 1 sweet onion, chopped
  • 2 zucchini, chopped
  • 2 medium tomatoes, chopped
  • ⅓ cup basil leaves, chopped
  • 2 teaspoons dried oregano
  • 1 jar organic spaghetti sauce
  • Shredded organic cheese

  1. Preheat oven to 400 degrees F.
  2. Cut spaghetti squash in half. Scoop out the seeds. Splash inside of squash with water, then microwave each half individually for 5 minutes. Careful when removing from microwave — it will be hot. Set aside to cool.
  3. Heat olive oil in a large skillet over medium heat. Add garlic. After a few minutes add onion. After a few minutes add zucchini. Finally add tomatoes, basil and oregano and cook for another 5 minutes, until everything is tender.
  4. Scoop out the spaghetti squash and place in a large mixing bowl. Add the veggies from skillet. Pour the entire jar of spaghetti squash into the bowl and mix well.
  5. Place the squash mixture in a large casserole dish, top with cheese and bake for 20-25 minutes, until the cheese is golden.

Calories: 238     Fat: 11 g     Carbohydrates: 33g     Sodium: 131 mg     Fiber: 4 g     Protein: 4 g    


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  • Flori March 13, 2013 at 1:38 am

    The spaghetti squasch recipe sounded real good, until I got to where it says microwave… I don’t microwave my food- is this recipe also available to be done in a regular oven? Waiting for your reply…e

    • Diana March 19, 2013 at 1:01 am

      Hi Flori,
      Pierce your squash all over with a fork and place in the oven at 400 degrees F for about 30 minutes. Then proceed with the rest of the recipe.

  • Anne W. September 25, 2013 at 10:34 pm

    Just finished dinner and everyone loved it! I have to admit I did not tell my teenagers it was spaghetti squash they wondered why the noodles were different but kept right on eating and had seconds. My husband is a total meat and potatoes guy and he had thirds as well as said it was one of his new favs! Thanks it felt good feeding my family fresh healthy food!

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