• Skip to main content
  • Skip to primary sidebar

Keto Cooking Christian

  • Recipes
    • Dinner
    • Dessert
    • Sides
    • Appetizers
    • Salads
    • Breakfast
    • Breads
    • Air Fryer
    • Slow Cooker
    • Soups
    • Sauces & Condiments
    • Recipe Collections
  • Cookbooks
  • Free Meal Plan
  • Keto
  • Shop
  • Faith
menu icon
go to homepage
subscribe
search icon
Homepage link
  • Recipes
  • Keto Cookbooks
  • Free Keto Meal Plan
  • Shop
  • How to Start Keto
  • Keto Diet Articles
  • Faith
  • About
  • Work With Me
  • Subscribe
    • Amazon
    • Facebook
    • Instagram
    • Pinterest
    • TikTok
    • Twitter
    • YouTube
  • ×
    Home / Recipes / Dinner / Italian Spaghetti Squash Casserole

    Italian Spaghetti Squash Casserole

    February 13, 2023 by Keto Cooking Christian 4 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases, see Disclosure.
    682 shares
    • Share
    • Flipboard
    • Tweet
    Jump to Recipe SaveSaved!

    This delicious low carb Italian Spaghetti Squash Casserole is the ultimate comfort food, filled with flavorful homemade marinara, tender spaghetti squash and gooey cheese.

    Italian Spaghetti Squash Casserole held up with silver serving spoon
    Easy Keto Dinners eBook 3D cover

    FREE EASY KETO DINNERS EBOOK

    DOWNLOAD NOW
    Jump to:
    • ❤️ Why You’ll Love this Spaghetti Squash Casserole
    • 🛒 What’s in Spaghetti Squash Casserole
    • 🔪 How to Make Italian Spaghetti Squash
    • Is Spaghetti Squash Good for a Keto Diet?
    • Why is My Squash Casserole Watery?
    • How to Bake Spaghetti Squash Keto?
    • Can You Have Italian Food on Keto?
    • Is Spaghetti Sauce Keto?
    • Can I Make This Casserole without Meat?
    • More Keto Casserole Recipes

    ❤️ Why You’ll Love this Spaghetti Squash Casserole

    • Satisfy your cravings for spaghetti
    • Flavorful Italian marinara with chunks of sausage and beef
    • Tender strands of squash makes a great low carb pasta alternative
    • Gooey cheesy topping
    • Perfect make-ahead dinner
    overhead view of Italian Spaghetti Squash Casserole with some missing

    Tender roasted spaghetti squash serves as a low carb pasta substitute in this Italian casserole, but you won’t miss it one bit! In fact, the roasted squash adds the perfect hint of caramelized sweetness that works beautifully with the savory meat sauce.

    If you’re looking for a healthy and hearty, Keto-friendly casserole the entire family will love, this spaghetti squash casserole is the perfect answer. And the best part, leftovers are even better the next day, making it ideal for meal prep!

    piece of Italian Spaghetti Squash Casserole on white plate with casserole in background

    This casserole has everything it needs to make it an ideal meal-in-one that's healthy and nutritious. I love to serve it with these light and fluffy Keto Garlic Rolls or some of this Keto Braided Herb Bread.

    If you love spaghetti squash, you should also check out this amazing Parmesan Garlic Roasted Spaghetti recipe. It's a delicious Keto side dish that goes well with everything from Italian Meatballs to Air Fryer Chicken Tenders.

    🛒 What’s in Spaghetti Squash Casserole

    • Spaghetti squash
    • Keto Italian Meat Sauce
    • Mozzarella cheese

    *Exact measurements are listed in the recipe card below.

    🥣 Recommended Tools

    • Baking sheet
    • Mixing bowl
    • 9 x 13 Casserole baking dish

    🔪 How to Make Italian Spaghetti Squash

    Preheat oven to 400°F.

    Prepare to roast your spaghetti squash in the oven for 35 minutes using this method.

    Tip: Roasting the spaghetti squash gives it extra flavor, but if you're in a hurry, you can use the "cook in the microwave" method instead.

    spaghetti squash being scraped with fork

    Once you add the spaghetti squash in the oven, you can start your sauce.

    Prepare a batch of this easy Keto Italian Meat Sauce, which should be ready around the same time the spaghetti squash comes out of the oven and has cooled enough to handle.

    Tip: If you don't have time to make your own meat sauce and have a low carb version on hand, I do still recommend adding browned ground beef and Italian sausage to it.

    spaghetti squash strands in glass bowl

    Using a fork, separate the spaghetti like strands and add them to a large mixing bowl.

    spaghetti squash strands in glass bowl with meat sauce on top

    Pour ⅔ of the Italian meat sauce over the top and mix to combine, making sure the squash is well coated in the sauce.

    spaghetti squash mixed with italian meat sauce in glass bowl

    Pour the mixture into a 9x13 casserole baking dish that’s been sprayed with nonstick spray.

    Italian Spaghetti Squash Casserole with meat sauce on top

    Top with the remaining meat sauce and mozzarella cheese.

    Italian Spaghetti Squash Casserole unbaked in casserole

    Bake for 15-20 minutes or until the cheese has melted and is slightly golden.

    Italian Spaghetti Squash Casserole in glass casserole dish

    This also makes a great "make-ahead" meal, so if you roast the spaghetti squash and make the Italian meat sauce ahead of time, you can assemble and bake when you're ready.

    Is Spaghetti Squash Good for a Keto Diet?

    Spaghetti squash is often used as a Keto friendly substitute for pasta. Not only is it low in carbs, but it's also a good source of fiber, vitamins and minerals, like C, Manganese, and B6. It also contains small amounts of magnesium, thiamine, folate, iron, and calcium.

    closeup of Italian Spaghetti Squash Casserole in glass baking dish

    Why is My Squash Casserole Watery?

    Spaghetti squash, like most vegetables contain a lot of water. That's why it's important to salt the spaghetti squash before roasting it to help draw out the excess moisture.

    Once you have roasted it and separated the strands, you can also blot the squash with paper towels or allow it to sit in a colander for few minutes.

    Italian Spaghetti Squash Casserole with spoon scooping out some

    How to Bake Spaghetti Squash Keto?

    Baking or roasting spaghetti squash is easier than it seems. For easy step-by-step instructions check out this article.

    Can You Have Italian Food on Keto?

    Of course, you can. Italian food reaches far beyond pasta, though admittedly, pasta is very common in Italian recipes. If you're looking for some other classic Italian recipes with a Keto makeover, check out these top favorites:

    • Chicken Marsala
    • Creamy Tuscan Chicken
    • Italian Breadsticks
    • Italian Beef Braciole
    • Chicken Parmesan
    Italian Spaghetti Squash Casserole with ladle holding up some

    Is Spaghetti Sauce Keto?

    Store-bought spaghetti sauce (or marinara) usually contains a fair amount of added sugar. So, the best way to ensure you're getting a low carb marinara sauce with clean and quality ingredients is to make it homemade.

    The easy Italian meat sauce used in this casserole is unbelievably quick and simple to make. The flavors are so rich and robust that you'll want to double or triple the batch, freeze the leftovers so you'll always have some on hand.

    piece of Italian Spaghetti Squash Casserole on white plate with casserole in background

    Can I Make This Casserole without Meat?

    If you're wanting to make this casserole for Meatless Monday or maybe you're looking for a hearty side dish, you can substitute the meat sauce for this simple, Homemade Keto Marinara.

    More Keto Casserole Recipes

    • Spinach Artichoke Casserole
    • Chicken Parmesan Casserole
    • Easy Taco Casserole
    • Chicken Pot Pie Casserole
    • Loaded Creamy Cauliflower Casserole
    • Chicken Cordon Bleu Casserole
    • Easy Sausage & Pepper Casserole
    • Bacon Cheeseburger Casserole
    • Chicken Florentine Casserole
    20 Easy Keto Recipes Cover Thumbnail

    FREE 20 EASY KETO RECIPES EBOOK

    DOWNLOAD NOW
    Italian Spaghetti Squash Casserole held up with silver serving spoon

    Italian Spaghetti Squash Casserole

    This delicious low carb Italian Spaghetti Squash Casserole is the ultimate comfort food, filled with flavorful homemade marinara, tender spaghetti squash and gooey cheese.
    5 from 1 vote
    Author: Julianne
    Servings 8
    Print Pin
    Save RecipeSaved!
    PREP 10 minutes mins
    COOK 55 minutes mins
    TOTAL 1 hour hr 5 minutes mins

    Ingredients
     

    • 1 large spaghetti squash
    • 1 batch Keto Italian Meat Sauce
    • 1 ½ cups mozzarella cheese, shredded

    Instructions
     

    • Preheat oven to 400°F.
    • Prepare to roast your spaghetti squash in the oven for 35 minutes using this method.
    • Once you add the spaghetti squash in the oven, you can start your sauce.
    • Prepare a batch of my Keto Italian Meat Sauce, which should be ready around the same time the spaghetti squash comes out of the oven and has cooled enough to handle.
    • Using a fork, separate the spaghetti like strands and add them to a large mixing bowl.
    • Pour ⅔ of the Italian meat sauce over the top and mix to combine, making sure the squash is well coated in the sauce.
    • Pour the mixture into a 9x13 casserole baking dish that’s been sprayed with nonstick spray.
    • Top with the remaining meat sauce and mozzarella cheese and bake for 15-20 minutes or until the cheese has melted and is slightly golden.

    Recipe Notes

    Roasting the spaghetti squash gives it extra flavor, but if you're in a hurry, you can use the "cook in the microwave" method instead.
    If you don't have time to make your own meat sauce and have a low carb version on hand, I do still recommend adding browned ground beef and Italian sausage to it.
    This also makes a great "make-ahead" meal, so if you roast the spaghetti squash and make the Italian meat sauce ahead of time, you can assemble and bake when you're ready.

    *Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

    Course Main Course
    Cuisine Italian
    Calories 196kcal
    Nutrition Facts
    Italian Spaghetti Squash Casserole
    Amount per Serving
    Calories
    196
    % Daily Value*
    Fat
     
    8
    g
    12
    %
    Saturated Fat
     
    4
    g
    25
    %
    Carbohydrates
     
    11
    g
    4
    %
    Fiber
     
    2
    g
    8
    %
    Sugar
     
    5
    g
    6
    %
    Protein
     
    20
    g
    40
    %
    * Percent Daily Values are based on a 2000 calorie diet.

    *Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.

    © Copyright for Keto Cooking Christian LLC. Please use the share buttons to share on social media, but please do not copy/paste the recipe.

    Rate this Recipe
    682 shares
    • Share
    • Flipboard
    • Tweet

    Filed Under: Beef, Casseroles, Dinner, Italian, Pork, Posts, Recipes

    Bible verse of the day

    And this commandment have we from him, That he who loveth God love his brother also.
    1 John 4:21

    Reader Interactions

    Comments

      5 from 1 vote (1 rating without comment)

      Leave a Comment or Review Cancel reply

      Your email address will not be published. Required fields are marked *

      Recipe Rating




    1. Larice

      October 27, 2023 at 1:47 pm

      i would like to make this ahead of time to take to a church dinner. I was given two spaghetti squash to use for this recipe but I was wondering if I would be able to freeze the casserole after I make it?

      Reply
      • Keto Cooking Christian

        November 06, 2023 at 8:56 am

        I have never tried freezing it before, but I would think this dish would be best served fresh. You can make and freeze the marinara in advance.

        Reply
    2. Holli

      June 09, 2023 at 6:14 pm

      I love this recipe, I have made it several times but I do a pound of ground beef and a pound of hot turkey sausage and we love it!!

      Reply
      • Keto Cooking Christian

        June 19, 2023 at 9:23 am

        Sounds amazing. I'm so glad you love it.

        Reply

    Primary Sidebar

    Julianne Walser KCC

    I'm Julianne, welcome! I offer tasty and indulgent Keto and Low Carb recipes that will never leave you feeling deprived!

    More about me →

    Footer

    AS FEATURED ON

    as featured on logo banner
    as featured on logo banner

    •SUBSCRIBE

    •COOKBOOKS

    •SHOP

    •Tim Tebow Foundation

    •ABOUT

    •CONTACT

    •PRIVACY POLICY

    • Facebook
    • Instagram
    • Pinterest
    • YouTube
    • TikTok
    • Amazon

    Copyright © 2025 Keto Cooking Christian® Registered Trademark | All Rights Reserved

    Rate This Recipe

    Your vote:




    A rating is required
    A name is required
    An email is required

    Recipe Ratings without Comment

    Something went wrong. Please try again.