Keto Spaghetti Squash Lasagna

If you’re craving the cheesy, saucy, and hearty comfort of lasagna but want to keep it keto-friendly, this Keto Spaghetti Squash Lasagna is the answer. This dish swaps out the traditional lasagna noodles with roasted spaghetti squash, creating a deliciously satisfying, low-carb alternative that doesn’t compromise on flavor. It’s loaded with rich tomato sauce, melted cheese, and savory ground beef, giving you all the lasagna goodness you love, while keeping your carbs in check.

Whether you’re a seasoned keto follower or just starting your low-carb journey, this recipe will quickly become a favorite. The spaghetti squash provides the perfect noodle-like texture, and the rich, meaty sauce paired with gooey cheese will leave you completely satisfied. Plus, it’s an easy meal to prepare in advance, making it great for busy weeknights or meal prep.

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Why You’ll Love Keto Spaghetti Squash Lasagna

This dish has everything you want in a lasagna, minus the carbs! The spaghetti squash is roasted to perfection, offering a slightly crunchy texture that mimics pasta, yet is full of nutrients. Combined with the savory sauce, gooey cheese, and seasoned beef, this lasagna will satisfy your carb cravings without ruining your diet. It’s not only keto-friendly but also gluten-free, making it a great option for anyone looking to cut back on carbs or gluten. Plus, the leftovers are just as good (if not better!) the next day.

My Personal Experience

I first tried this recipe when I was craving lasagna but didn’t want to blow my carb count for the day. I love lasagna, and I’ll be honest, nothing compares to the traditional version. But after trying this keto version, I was blown away. The spaghetti squash is a genius swap—it truly has that pasta-like texture, and when paired with the meat sauce and cheese, it tastes just like the classic comfort food we all know and love. Since then, I’ve made this dish multiple times, and it’s been a hit every single time with my family and friends, even those who aren’t on a keto diet. Trust me, you’ll love it!

Required Equipment

For this recipe, you’ll need a few key kitchen tools that’ll help make the process smooth and easy:

• Baking sheet: To roast your spaghetti squash, a baking sheet is essential. I like using a large one so the squash halves have plenty of space to cook evenly. A good non-stick baking sheet will make clean-up easier, too!
• Knife and cutting board: A sharp knife is a must when cutting through the tough spaghetti squash. Make sure to be careful when slicing it in half—it’s a bit of a workout but well worth it!
• Large skillet: You’ll need a skillet to cook the ground beef and make the delicious sauce. A non-stick skillet works wonders, so the beef doesn’t stick, and it cooks evenly.
• Baking dish: You’ll need a baking dish to assemble the lasagna. I prefer a 9×13-inch dish, as it fits the roasted spaghetti squash nicely and gives you plenty of room to layer everything.
• Spatula and spoon: These are perfect for stirring your sauce and ground beef and for layering your lasagna ingredients.

Ingredients & Substitutions

To make this keto spaghetti squash lasagna, you’ll need the following ingredients:

• 1 medium spaghetti squash: This is the base of the recipe and acts as a pasta substitute. The squash is a great low-carb option and provides a hearty texture. If you can’t find spaghetti squash, you can try using zucchini noodles as an alternative.
• 1 lb ground beef: This will be the meat component of your lasagna. You can also use ground turkey or ground chicken for a leaner option, or even ground pork for a slightly different flavor.
• 1 jar of low-carb marinara sauce (about 24 oz): Choose a low-carb marinara sauce or make your own to keep the carbs in check. Some store-bought sauces can have added sugars, so read the label carefully.
• 1-2 cups of ricotta cheese: This provides the creamy, cheesy base for your lasagna layers. If you prefer, you can substitute ricotta with cottage cheese.
• 2 cups of shredded mozzarella cheese: The melty cheese on top adds the best finishing touch to your lasagna. You can substitute with provolone cheese if you prefer.
• 1/2 cup of grated Parmesan cheese: Parmesan brings a salty, nutty flavor that really enhances the overall taste of the dish.
• 1 egg: The egg helps to bind the ricotta cheese together and gives the lasagna a nice, firm texture when baked.
• 1 tsp dried basil: This adds a nice herby flavor that’s perfect for lasagna.
• 1 tsp garlic powder: Garlic is a must in any Italian-inspired dish, and garlic powder gives you that rich flavor.
• Salt and pepper: To taste, these are used to season the meat sauce and the cheese mixture.

How to Make Keto Spaghetti Squash Lasagna

1. Preheat the oven: Begin by preheating your oven to 400°F (200°C). This will ensure your spaghetti squash roasts evenly.
2. Prepare the spaghetti squash: Cut the spaghetti squash in half lengthwise, removing the seeds. Drizzle the insides with olive oil, then sprinkle with salt and pepper. Place the squash halves cut-side down on a baking sheet. Roast for about 40-45 minutes or until the flesh is tender and easily pulled apart with a fork.
3. Cook the ground beef: While the squash is roasting, heat a large skillet over medium heat. Add the ground beef, breaking it apart with a spatula as it cooks. Season with salt, pepper, garlic powder, and dried basil. Cook until the meat is browned and fully cooked.
4. Add the marinara sauce: Once the beef is cooked, pour in the marinara sauce and stir to combine. Allow the sauce to simmer for 10-15 minutes, letting the flavors meld together.
5. Prepare the ricotta cheese mixture: In a separate bowl, mix the ricotta cheese, egg, and Parmesan cheese. Stir well to combine.
6. Assemble the lasagna: Once the spaghetti squash is done, use a fork to scrape out the strands of squash and place them into the bottom of a greased baking dish. Layer the beef marinara sauce on top, followed by a layer of the ricotta mixture, and then some shredded mozzarella cheese. Repeat the layers until all the ingredients are used up.
7. Bake: Top the final layer with mozzarella cheese, and bake in the preheated oven at 375°F (190°C) for 20-25 minutes, or until the cheese is bubbly and golden.
8. Serve: Allow the lasagna to cool for a few minutes before slicing. Enjoy your keto spaghetti squash lasagna!

Tips for this Recipe

• If you want a more authentic pasta texture, try roasting the spaghetti squash a day ahead and storing it in the fridge. This helps the squash retain a firmer texture when baked.
• If you love a cheesy crust, broil the lasagna for a few minutes at the end of baking to get the top extra crispy and golden.

Optional Additions

• You can add spinach, mushrooms, or zucchini to the meat sauce for more veggies.
• For an extra cheesy experience, add a layer of ricotta cheese on top of the meat sauce.

Serving Ideas

This keto spaghetti squash lasagna pairs beautifully with a side of garlic bread made with almond flour or some simple sautéed greens. A side salad with a tangy vinaigrette dressing would also complement the dish nicely.

Storage Recommendations

Store any leftover lasagna in an airtight container in the refrigerator for up to 3-4 days. To reheat, simply place the lasagna in a preheated oven at 350°F (175°C) for about 15-20 minutes, or until hot.

Frequently Asked Questions

• Can I use a different squash? Yes, you can substitute with zucchini noodles or another low-carb squash like yellow squash, but spaghetti squash works best for the “noodle” effect.
• Can I make this ahead of time? Yes! This lasagna can be assembled ahead of time and stored in the fridge for up to a day before baking.
• Can I freeze this lasagna? Yes, this lasagna freezes very well. Just be sure to wrap it tightly in plastic wrap and foil before placing it in the freezer.

Nutritional Breakdown (Per Serving)

• Calories: 350
• Fat: 24g
• Protein: 25g
• Total Carbs: 15g
• Net Carbs: 8g

I’m so excited to hear how this recipe turned out for you! 😊 Don’t forget to follow us on Instagram and Facebook for daily keto inspiration, tasty recipes, and all the support you need to crush your goals. If you’re new to keto, be sure to check out our Keto Diet Plan for Beginners: Step-by-Step Guide—it’s the perfect way to kickstart your low-carb journey with confidence!