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A plate full of delicious spaghetti squash noodles topped with parmesan cheese after it was cooked in the instant pot in only 8 minutes.

The Best Spaghetti Squash Recipe Using Instant Pot

Are you looking for a healthy and delicious dinner idea? Or perhaps you don't have a plan for supper and now it's time to eat? This recipe for the Best Spaghetti Squash in only 8 minutes made in the Instant Pot is a tasty vegetarian meal that is quick to prepare and will leave you full.  The squash is cooked until it is tender and moist and tastes like a fancy pasta dish when paired with marinara sauce in its own boat.  It is seriously yummy!
5 from 12 votes
Prep Time 5 mins
Cook Time 8 mins
Total Time 13 mins
Course Main Course
Cuisine American
Servings 4
Calories 204 kcal


  • 1 large spaghetti squash
  • 1 tablespoon olive oil
  • ½ onion diced
  • 3 cloves garlic chopped
  • 3 cups marinara sauce out of a jar or homemade
  • 1 teaspoon oregano
  • salt to taste
  • pepper to taste


  • Cut your squash in half from stem to base, scoop out all the seeds.
  • Place the trivet that came with your Instant Pot on the bottom of the Instant Pot.
  • Add 1 cup of water to the pressure cooker.
  • Put in your spaghetti squash facing each other, but with space between them.  If your squash is too big to fit, cut it into quarters.
  • Secure the lid on the Instant Pot, set it to "sealing". Set to 8 minutes on high pressure.
  • Meanwhile, saute ½ onion and 3 cloves of garlic in 1 tablespoon of olive oil until translucent, about 4 minutes.
  • Add 3 cups of marinara sauce and 1 teaspoon of oregano to the onion and garlic mixture and heat it up.
  • When the timer of the Instant Pot beeps, signaling that it is done, switch to "venting" to release steam.  Be sure to use a long-handled spoon or oven mitt so you don't get burned from the steam as it spurts out!
  • When the pressure is fully released and the pressure indicator has dropped, remove the lid.
  • Then, use tongs to move the spaghetti squash to a cutting board.
  • Your squash should be tender when pierced with a fork.
  • Using a fork, pull up threads of "spaghetti", use a spoon to transfer the "spaghetti" to the pot with the marinara sauce, or you can just place "spaghetti" on a plate and serve the heated marinara sauce on top
  • Alternatively, if mixing the "spaghetti" noodles into the marina sauce, after it is mixed, spoon the marinara mixture back into the squash "boat".
  • If you like, you can put mozzarella cheese or parmesan cheese on top and broil in the oven for a couple of minutes.
  • However, we like to add cottage cheese to ours and simply dig in! Yum!
  • Enjoy!


Nutritional information is approximate and is meant as a guideline only.


Serving: 1gramsCalories: 204kcalCarbohydrates: 33gProtein: 5gFat: 7gSaturated Fat: 1gPolyunsaturated Fat: 5gCholesterol: 4mgSodium: 1055mgFiber: 7gSugar: 16g
Keyword dinner, vegetable, vegetarian
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