Spaghetti Squash Lasagna

5 from 4 votes

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Spaghetti Squash Lasagna is a tasty low-cal solution to your favorite Italian dinner. Each spaghetti squash half is loaded with marinara sauce, meat, and Italian cheeses!

Spaghetti Squash Lasagna

This Spaghetti Squash Lasagna is filling, delicious and actually good for you! Spaghetti squash is such a versatile vegetable that is easy to make and fun to add to dozens of different dishes. This lasagna recipe takes my love of spaghetti squash to a whole new level. Cooking and serving the lasagna right in the spaghetti squash halves makes clean-up a breeze. If you haven’t had spaghetti squash before, you have to try it! It is a low-carb and delicious substitute for pasta. When cooked, the flesh of the spaghetti squash separates into spaghetti like strands. You simply use a fork to scrape it from the sides of the squash.  Fill it with meat, sauce and cheese and you’ll never even miss the pasta!

Health Benefits of Spaghetti Squash

There are 42 calories in a cup of spaghetti squash. Compare that to the 221 calories in a cup of cooked spaghetti. That’s a huge calorie difference! In addition to saving some calories, spaghetti squash provides these essential nutrients:

  • Vitamins A, B, and C
  • Potassium
  • Folic Acid
  • Beta-carotene
  • Omega-3 essential fatty acids
  • Antioxidants lutein and zeaxanthin
  • Fiber

These nutrients can help increase eye health, lower blood pressure, enhance blood circulation, help prevent heart disease and aid in weight loss. It’s such a healthy food to incorporate into your diet. And when prepared correctly, your kids will love it too! Check out our post on How to Cook Spaghetti Squash Four  Different Ways for some delicious ideas.

Spaghetti Squash Lasagna is Gluten Free

I made this for my mother-in-law who is gluten intolerant and she loved it! If you are preparing this for someone who has gluten allergies, be sure to check the ingredients on the sausage to make sure it doesn’t contain gluten. If you are in a hurry and don’t want to make a homemade sauce, a jar of sauce also works. I have done this and it tastes just as good, it just might add a couple more calories. Definitely give this recipe a try, you won’t be disappointed. My kids even ate it up with no complaints!

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Spaghetti Squash Lasagna

5 from 4 votes
Spaghetti Squash Lasagna is a tasty low-cal solution to your favorite Italian dinner. Each spaghetti squash half is loaded with marinara sauce, meat, and Italian cheeses!

Prep Time 15 mins
Cook Time 1 hr 30 mins
Total Time 1 hr 45 mins
Course Dinner, Main Course
Cuisine Italian
Servings 4 servings


For the sauce:


  • Preheat oven to 400º. Cut spaghetti squash in half lengthwise and scoop out seeds and membrane. Season lightly with salt and black pepper; bake about 1 hour, or longer if needed on a baking sheet, cut side down.
  • If you prefer the microwave, cut squash in half lengthwise, scoop out seeds and fibers and place on a microwave safe dish and cover. Microwave 8-9 minutes or until soft.
  • In a small bowl combine the ricotta cheese, parmesan cheese and parsley.
  • In a large deep sauté pan, heat oil and add onions and garlic; sauté on medium-low for about 3 to 4 minutes, until soft. Add the sausage and cook, breaking up into smaller pieces until browned and cooked through. When cooked, add the crushed tomatoes and add salt and pepper to taste. Reduce heat to low and simmer 20 to 30 minutes, adding fresh basil at the very end.
  • When spaghetti squash is cooked, let it cool for about 10 minutes keeping the oven on. If you microwaved this, preheat the oven to 400°.
  • When the spaghetti squash is cool enough to handle, use a fork to remove flesh, which will come out in spaghetti looking strands reserving the shells. Drain the squash on a paper towel to soak up any excess liquid, then toss with half of the sauce. Place the spaghetti squash back into the 4 shells and place on a baking sheet.
  • Top each with remaining sauce, 1 scoop ricotta cheese mixture, and a little mozzarella cheese.
  • Bake in the oven for 20 – 30 minutes or until everything is hot and the cheese is melted.


Time saving tip:  If you are short on time, you can brown the sausage and add a can of your favorite spaghetti sauce instead of making and simmering the sauce in the recipe.
Make it vegetarian by eliminating the sausage.  

Nutrition Information

Calories: 601kcalCarbohydrates: 13gProtein: 32gFat: 47gSaturated Fat: 20gCholesterol: 126mgSodium: 1287mgPotassium: 671mgFiber: 2gSugar: 6gVitamin A: 1072IUVitamin C: 18mgCalcium: 450mgIron: 3mg

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This recipe is adapted from Skinny Taste.

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About the author

Erica Walker

Erica lives in Boise, Idaho with her husband, Jared, an attorney, and her beautiful three girls. Beyond the world of recipes, she loves adventuring with everything from kayaking, to cruising, to snowboarding and taking the family along for the thrill ride.

More about Erica Walker

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  1. 5 stars
    I just made this for dinner and it is AMAZING! Love how quick and easy it was, especially the sauce. Thanks for the awesome recipe!

  2. Where is the recipe for the butt nut squash soup ? You put up a pin for the soup that is what a person is looking for when they click on your pin ..not a wild goose chase that starts with a recipe for lasagna ! If a person wants to make lasagna they would type in Lasagna . Way to go at wasting people’s time.

    1. Hi there- I am not sure what you are referring to. Was this a search on Pinterest? I went to our search bar and typed “butternut squash” and the first recipe that came up was the butternut squash soup. We have spent countless hours making our site as user-friendly as possible so you can find what you need and get cookin’– anyway- here is the recipe for the butternut squash soup:

    1. You will want to scrape out the spaghetti and pulp as much as possible, but after doing so, you will have a thin “shell” that wouldn’t be very fun to eat. Most will prefer discarding the shell. Hope this helps!

  3. I made my own sauce and used ground lamb as a healthier alternative. I add egg to my ricotta to make it richer. Instead of returning the squash back to its vessel I halved the squash and layered it in a casserole dish so my little one would eat it. I’m all about healthy and child friendly recipes.

    1. 5 stars
      Thanks for the suggestion of layering in a dish! I baked the spaghetti squash the night before to save time in making a weeknight meal, and saving the shells didn’t seem appealing. (Also used a jar of spaghetti sauce instead of making sauce.) The casserole dish worked perfectly, and everyone had seconds!

    1. We are currently working on adding these to all the recipes. Because we have over 1,000 recipes on our site, it may take a little while. Thanks for your patience!

    1. Typically the crushed tomatoes are 28oz… so you will use half of a can of the 28oz or 14oz total. Does that make sense?

    1. Thank you for sharing your success with this recipe. I have picky eaters too and I love it when I find something healthy they will eat.

  4. This is truly amazing! I just finished devouring it. I wasn’t expecting it to be quite that good. On my next menu for impressing company. WOW!