Low Carb Spaghetti Squash Bake

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  • prep time

    prep time

    25 min

  • cook time

    cook time

    1 h 10 min

  • ready time

    ready time

    1 h 35 min

Low Carb Spaghetti Squash Bake

5 ratings

I love this Keto Spaghetti Squash bake because it makes the most delicious, prep ahead Low Carb dinner recipe! Roasted spaghetti squash is folded into diced zucchini, diced white onions, garlicky browned ground beef, homemade tomato sauce with plenty of parmesan cheese. You will love this healthy weeknight meal that is great for packing into lunches and reheats nicely.

What kind of ground beef should I use?

Please use a higher fat percentage beef like ground chuck that is 80% lean to 20% fat. I find this type of beef adds nice fat to the casserole for flavor and adds satiety.

How do I know the spaghetti squash is cooked?

The spaghetti squash should yield gentle pressure when ready, but also shouldn’t be too soft that the spaghetti squash has lost all texture. Some texture is nice because it will endure the final cooking round where it will finish cooking.

How can I add more fat to this dish?

Please feel free to serve this dish with avocados on the side or saute the beef with more fat to suit your individual dietary needs.

Serving suggestions

Please serve this with an excellent Keto salad like Keto Spinach and Pecan Salad https://www.carbmanager.com/recipe/spinach-feta-pecan-salad.

  • Net Carbs

    7.1 g

  • Fiber

    1.8 g

  • Total Carbs

    9 g

  • Protein

    33.2 g

  • Fats

    28.7 g

429 cals

Low Carb Spaghetti Squash Bake

#1 Low Carb & Keto Diet App Since 2010

Track macros, calories, and access top Keto recipes.

Download on the App Store
Get in on Google Play

Ingredients

  • Spaghetti squash

    Spaghetti squash

    1.5 lb

  • Salt, sea salt

    Salt, sea salt

    1 tsp

  • Hamburger or ground beef, 80% lean

    Hamburger or ground beef, 80% lean

    2.25 lb

  • Salt, sea salt

    Salt, sea salt

    1 tsp

  • Garlic powder

    Garlic powder

    0.5 tsp

  • Extra virgin olive oil

    Extra virgin olive oil

    1.5 tbsp

  • Garlic

    Garlic

    4 clove

  • Tomato, canned

    Tomato, canned

    14 oz

  • Salt, sea salt

    Salt, sea salt

    1 tsp

  • Italian seasoning

    Italian seasoning

    1 tsp

  • Parmesan cheese, fresh (hard)

    Parmesan cheese, fresh (hard)

    0.75 cup, shredded

  • Zucchini, raw

    Zucchini, raw

    1 large

  • White onion

    White onion

    1 small

  • Queso Chihuahua (Chihuahua cheese)

    Queso Chihuahua (Chihuahua cheese)

    4 cup, shredded

Recipe Steps

steps 8

1 h 35 min

  • Step 1

    Preheat an oven to 400 F. While the oven is heating, cut spaghetti squash in half lengthwise. Season the flesh with 1 tsp sea salt and then flip them cut side down onto a parchment-lined baking sheet. Cook for 30-35 minutes or until the flesh is soft, but the squash is still slightly crunchy (it will continue to cook in the final step). Once they remove the spaghetti squash from the oven, turn the heat down to 350 F.
    Step 1
  • Step 2

    While the squash is cooking, add the raw ground beef to a medium-sized nonstick skillet and place over medium-high heat. Use a wooden spoon or spatula to begin breaking up the meat. Season it with two teaspoons of sea salt and half a teaspoon of garlic powder. Continue to cook the beef, occasionally stirring until the meat is browned. This will take about 10-12 minutes total.
    Step 2
  • Step 3

    Heat a medium-sized saucepan over medium heat, and wait until the pan starts to get hot (but not too hot because olive oil has a lower smoke point). Add the olive oil to the pan. Then add the garlic cloves which have been smashed. Cook the garlic for about 30 seconds while stirring, being careful not to brown the garlic.
    Step 3
  • Step 4

    Immediately add a can of diced tomatoes, sea salt, and Italian seasoning. Taste and adjust, adding more sea salt as necessary (some cans of tomatoes are very sweet or sour and need extra seasoning). Allow the tomatoes to simmer for 5-7 minutes.
    Step 4
  • Step 5

    In a large mixing bowl, combine the spaghetti squash, diced zucchini, white onion, tomato sauce, ground beef, and parmesan cheese. Mix well with a wooden spoon—taste adding more salt as desired.
    Step 5
  • Step 6

    Pour the casserole into a 9” x 13” casserole dish.
    Step 6
  • Step 7

    Top with the mozzarella cheese.
    Step 7
  • Step 8

    Bake for 30 minutes or until the cheese is browned and the casserole is heated throughout. Serve immediately.
    Step 8

Comments 18

  • jeffwrule

    jeffwrule 6 months ago

    This was just ok for me. The flavor level is bland. The ratio of tomato to beef is off. Too dry. Instructions need a thorough going over. It never said to cook the onions, but I am sure this is an oversight. Seems off. This lack of attention to detail has not been my experience in other recipes.

    • FullMoonChef

      FullMoonChef 9 months ago

      I used a combination of sausage and bison, which likely accounts for the dryness of my dish. But it was delicious, nonetheless. I drizzled a bit of keto tomato cream soup over the top and it was perfect.

      • SuperMacadamia897319

        SuperMacadamia897319 a year ago

        I think I was only suppose to use half of the spaghetti squash. I used the whole spaghetti squash and it made two 9x 14 pans.

        • RemarkableArugula228930

          RemarkableArugula228930 a year ago

          You can't get spaghetti squash where i live. What alternative can i use please?

          • Jlambo

            Jlambo a year ago

            Zucchini spirals? Or shredded? Cabbage thinly sliced?

        • Terri Bo Berry

          Terri Bo Berry a year ago

          This was a huge hit with my family. I’m definitely going to make it again. I also used Rotel tomatoes in place of plain canned tomatoes to give it a little kick.

          • KS

            KS a year ago

            Delicious and very filling! Everyone loved this "lasagna". Also a nicely written recipe. Thank you!

            • StupendousKale992233

              StupendousKale992233 2 years ago

              Horrible recipe! Ingredients don’t match instructions. App stinks!!!

              • recipewriter

                recipewriter 2 years ago

                Thank you for bringing this to our attention. We have corrected this recipe to include the zucchini and the onions. Thank you!

            • FabulousAvocado176132

              FabulousAvocado176132 2 years ago

              What size bowl? Instructions are using ingredients not listed

              • recipewriter

                recipewriter 2 years ago

                The recipe calls for a large size bowl. Thank you for bringing the ingredients to our attention, we have updated the recipe.

            • SuperAvocado8

              SuperAvocado8 3 years ago

              I love many of these recipes but I worry that the nutrition info doesnt ever seem to look correct -- especially with missing ingredients.

              • recipewriter

                recipewriter 2 years ago

                We have corrected the recipe to include the zucchini and onion, so the nutritionals are on par now. Thank you!

            • Iduna

              Iduna 3 years ago

              The ingredients don't match the instructions. There is Chihuahua cheese at the top but not in the bottom but mozzarella cheese at the bottom and not in the top. Also the instructions speak of onion and zucchini which is not listed in the ingredients

              • recipewriter

                recipewriter 2 years ago

                There is parmesan cheese inside of the casserole, and then the Chihuahua cheese is spread on top of the casserole. The zucchini and onion were added to the recipe. Thank you for catching that!

            • GorgeousKetone144413

              GorgeousKetone144413 3 years ago

              Zucchini is not listed in the ingredient list

              • recipewriter

                recipewriter 2 years ago

                Thank you for pointing this out. We have corrected the recipe to include the zucchini.

              • FantasticRadish669354

                FantasticRadish669354 3 years ago

                It’s listed in step 5 though