Slow Cooker Spaghetti Squash and Turkey Meat Sauce


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Take the guesswork out of how to cook the perfect spaghetti squash with this Slow Cooker Spaghetti Squash and Turkey Meat Sauce recipe. The best part is the squash and sauce cook together!

If you love cooking with turkey, also try my slow cooker turkey meatballs over spaghetti.

Cooked spaghetti squash and sauce in a slow cooker.
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Why you should try slow cooker spaghetti squash

If you know anything about cooking spaghetti squash then you may see it as one of those iffy vegetables to try, yet every recipe online makes it look easy (and delicious). Thanks to this easy peasy recipe, you will definitely cook the perfect spaghetti squash.

I’ve seen a few recipes for meatballs and spaghetti squash in the crock pot on Pinterest. And since I wasn’t in the mood to make homemade meatballs (or use frozen meatballs), I made a quick and easy turkey meat sauce in the slow cooker. Then, I put the spaghetti squash cut in half right in the slow cooker and cooked it to perfectly tender.

Mind you, I have never had spaghetti squash and I didn’t realize how much I would enjoy this. The cooking time was just right to make the spaghetti squash “noodles” not mushy. And my daughter couldn’t believe that the spaghetti came from the squash – she thought it was a miracle! My husband and I had a good laugh about that. It was a fun thing to make for dinner that is actually healthy too. We also make slow cooker tomato butter sauce and slow cooker bolognese sauce.

Recipe Ingredients

Ingredients for spaghetti squash and turkey meat sauce on a table.
  • Spaghetti Squash: You’ll need a whole squash for this recipe, which will be cut in half. Once cooked, you’ll have noodle like strands that resemble “spaghetti.”
  • Ground Turkey: Using turkey meat makes this recipe super healthy and it tastes great.
  • Marinara Sauce: This will be the base for your homemade meat sauce.
  • White Onion: You’ll only need a small white onion that will be diced and added to the sauce.
  • Portabello Mushrooms: These are the same as white mushrooms, just an older version of themselves.
  • Seasoning: Salt, black pepper, oregano, basil, and freshly minced garlic give the sauce its Italian flavor.
  • Cooking Oil: Used to help brown the ground turkey. You can also use olive oil.

Step-by-Step Directions

Six images showing how to make turkey meat sauce and spaghetti sauce in a slow cooker.

Step One – Add the browned ground turkey to the bottom of the slow cooker and spread it out evenly. Add the marinara sauce, mushrooms, onion, garlic, salt, pepper, oregano, and basil to the slow cooker as well. Stir.

Step Two – Add the marinara sauce.

Step Three – Then add the mushrooms, onion, garlic, salt, pepper, oregano, and basil to the slow cooker as well. Stir.

Step Four – Cut the spaghetti squash in half with a sharp knife (and on a cutting board), and remove the seeds with a spoon. Add the squash cut side down in the slow cooker into the sauce.

Step Five – Cover and cook spaghetti squash in the slow cooker on HIGH for 4 hours. Do not open the lid during the cooking time to not allow steam to escape.

Step Six – After the cooking time, place one of the halves of the spaghetti squash into a small bowl. Use a fork to gently scrape to form noodle like pieces. Serve with a generous helping of the meat sauce and enjoy!

Turkey meat sauce in a slow cooker.

How to serve

  • One of the more creative ways to serve slow cooker spaghetti squash is to place one of the halves in a bowl and a helping of the sauce poured into the bowl.
  • You can also place a bed of spaghetti squash strands on a plate and top it with homemade meat sauce.
  • Since this dish resembles actual spaghetti, don’t forget to serve it with garlic bread or garlic sticks.
  • If you want to serve a side dish, you can serve vegetables. They will go perfectly with the meat sauce.
turkey meat sauce inside of a half of a spaghetti squash.

Recipe FAQs

What is the easiest way to cut the spaghetti squash in half?

If your regular kitchen knife won’t cut the squash in half, make a few piercings in a straight line (think a dashed line) and microwave your squash for 5-6 minutes and then slice down the dotted line you made. It should cut fairly easily.

What size squash should I use?

A small squash will yield a good amount of spaghetti and ensure that both halves will fit in the slow cooker.

Can I cook the seeds like pumpkin seeds?

Yes! I highly recommend keeping the seeds and roasting them.

Can I use a different type of ground meat?

Although, I used ground turkey, you can use ground beef, ground chicken, or ground pork.

Can I use regular spaghetti with this recipe?

Sure! Be sure to cook the spaghetti according to the box instructions and wait to add it to the sauce.

How do I store?

Place the leftovers in the fridge for up to four days or freezer for up to three months.

Meat sauce being poured on spaghetti squash.

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Overhead shot of spaghetti sqaush and turkey meat sauce.

Slow Cooker Spaghetti Squash and Sauce

5 from 12 votes
Prep Time: 15 minutes
Cook Time: 4 hours
Total Time: 4 hours 15 minutes
Servings: 4
Homemade meat sauce is made with ground turkey and Italian-style seasonings and cooked along with halved spaghetti squash in the slow cooker.

Ingredients 
 

  • 1 lb. ground turkey, I used 7% fat
  • 1 Tbsp. cooking oil
  • 3 lb. spaghetti squash
  • 23.5 oz. jar marinara sauce
  • 1 portabello mushroom, diced
  • 1 small white onion, diced
  • 1 garlic clove, minced
  • 1/2 tsp. salt
  • 1/4 tsp. pepper
  • 1/2 tsp. oregano
  • 1/2 tsp. basil

Instructions 

  • In a large pan on the stove-top set to medium-high heat, add cooking oil. Brown the turkey. Add to the slow cooker. Add the marinara sauce, mushrooms, onion, garlic, salt, pepper, oregano, and basil to the slow cooker as well. Stir.
  • Cut the spaghetti squash in half, remove the seeds with a spoon.
  • Add the squash cut side down in the slow cooker into the sauce.
  • Cover and cook on HIGH for 4 hours. Do not open the lid during the cooking time.

How to Video

Sarah’s Notes

  • I use ground turkey, though you can use ground beef, ground chicken, or ground pork.
  • Place the leftovers in the fridge for up to four days or freezer for up to three months.

Nutrition

Calories: 324kcal | Carbohydrates: 36g | Protein: 32g | Fat: 8g | Saturated Fat: 1g | Cholesterol: 62mg | Sodium: 1230mg | Potassium: 1369mg | Fiber: 8g | Sugar: 18g | Vitamin A: 1190IU | Vitamin C: 21mg | Calcium: 119mg | Iron: 4mg

Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.

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29 Comments

  1. Anonymous says:

    Just finished making this…it was amazing!!! I used ground beef, no mushrooms and onions…it was super easy to make..added a garden salad..my 20 year old son loves it….I will be making this quite often.

    1. Tricia says:

      Can you cook it on low for 6-8 hours?

      1. Sarah Olson says:

        Yes, I think that will work well.

  2. Laura says:

    Any idea how long this would take in an instant pot?

  3. Jean says:

    Do you have the nutritional details yet?

    1. Sarah Olson says:

      Hi Jean, I just added them for you. They are right below the recipe.

      1. Jean says:

        Thank you!

  4. Lara says:

    Do you have nutritional info?

    1. Sarah Olson says:

      I’m working on getting on my site this month. Thank you for your patience with me!

  5. Robin says:

    Is there any reason beef shouldn’t work?

    1. Sarah Olson says:

      None at all! Let me know how you like it

  6. sassygirl says:

    love the spaghetti squash/marinara sauce
    combo (i left out the turkey…being vegan)
    and it turned out absolutely yum!
    thanks for sharing…
    🙂

    1. Sarah Olson says:

      So great to hear!

  7. Nancy says:

    OMG Sarah, I just made this for the second time today. So, so good AND easy! Set it at high for four hours and at three, my squash was ready. I took it out with 40 minutes to go. I used two large porabella mushrooms, about a half eggplant, baby carrots and a whole onion…all chopped in good size pieces since they give off so much liquids. Used ground turkey from Costco and #99 traditional marinara from Trader Joes…I did add a few shakes of pepper flakes…this is seriously good stuff. Thanks so much…I thought it needed to be put over rice…nope…great just the way it is. Great way of cooking a Spaghetti Squash.

    1. Sarah Olson says:

      That’s awesome. I like what you did with the recipe! I was shocked myself how great the squash tastes in this.

  8. Theresa says:

    Love this idea and it’s summer heat friendly and will be conferring in the winter. I will be making this over the weekend. Glad I just found your blog. Thank you

  9. Jlo says:

    Can you cook on low? For how long would it be?

    1. Sarah Olson says:

      I have not tried. I’m guessing 6-7 hours on low.

  10. Alexandra says:

    The taste is amazing and is not that hard to make. Thanks for sharing!