How To Make Spaghetti Squash Lasagna

You can make spaghetti squash lasagna by roasting the squash, scraping it into strands, and layering it with ricotta, meat sauce, and mozzarella just like a classic lasagna.
 
It’s a lighter, low-carb twist that still gives you that cozy, cheesy, baked-pasta vibe you crave on a chilly evening.
 
The best part is that spaghetti squash lasagna doesn’t require you to boil any noodles, which means less mess and fewer pots to scrub.
 
Once you learn how to make spaghetti squash lasagna, it becomes one of those easy weeknight dinners you’ll keep coming back to.
 
In this post, I’ll walk you through how to make spaghetti squash lasagna step by step, plus a few tips so yours turns out tender, saucy, and never watery.
 
Let’s get cooking.
 

How to Make Spaghetti Squash Lasagna (The Simple Way)

Learning how to make spaghetti squash lasagna really comes down to three simple stages: roast the squash, build the layers, and bake until bubbly.
 
Here’s how to make spaghetti squash lasagna without any fancy equipment or hard-to-find ingredients.
 

1. Roast the Spaghetti Squash First

The foundation of any good spaghetti squash lasagna is a properly roasted squash.
 
Preheat your oven to 400°F, cut the squash in half lengthwise, and scoop out the seeds.
 
Drizzle the cut sides with olive oil, sprinkle on salt and pepper, and place them cut-side down on a baking sheet.
 
Roast for about 35 to 40 minutes, until the flesh is fork-tender.
 
Let it cool for a few minutes, then use a fork to scrape out those pasta-like strands.
 
This step is what makes spaghetti squash lasagna feel so much like the real deal.
 

2. Make a Quick Meat or Veggie Sauce

While the squash roasts, brown a pound of ground beef or Italian sausage in a skillet.
 
Add a jar of marinara or your favorite homemade tomato sauce and let it simmer for ten minutes.
 
If you want a vegetarian spaghetti squash lasagna, swap the meat for sautéed mushrooms, spinach, or zucchini.
 
The sauce is where the flavor lives, so don’t be shy with garlic, oregano, and a pinch of red pepper flakes.
 

3. Mix the Ricotta Filling

In a bowl, combine 15 ounces of ricotta with one egg, a cup of shredded mozzarella, half a cup of grated Parmesan, and a handful of chopped fresh basil.
 
This creamy mixture is what gives spaghetti squash lasagna its rich, lasagna-like texture.
 
Season with salt, pepper, and a little nutmeg if you’re feeling fancy.
 

Assembling Your Spaghetti Squash Lasagna

Now comes the fun part: layering everything together in a baking dish.
 
Spread a thin layer of sauce on the bottom, then add half the squash strands.
 
Top with half the ricotta mixture, then half the remaining sauce, and a sprinkle of mozzarella.
 
Repeat with the rest of the squash, ricotta, and sauce, finishing with a generous layer of mozzarella and Parmesan on top.
 
Here are a few extra tips to make your spaghetti squash lasagna turn out perfectly every time.
 

1. Drain the Squash Well

Spaghetti squash holds a lot of water, and excess moisture can turn your lasagna soupy.
 
After scraping the strands, place them in a colander and press gently with paper towels to remove extra liquid.
 
This one step makes a huge difference in how your spaghetti squash lasagna sets up.
 

2. Don’t Skip the Resting Time

Once your spaghetti squash lasagna comes out of the oven, let it rest for 10 to 15 minutes before slicing.
 
This gives the layers time to firm up so your servings hold together on the plate.
 

3. Bake at the Right Temperature

Bake your spaghetti squash lasagna at 375°F for about 25 to 30 minutes, until the cheese is golden and the sauce bubbles around the edges.
 
If the top browns too fast, cover it loosely with foil and keep going.
 

Why You’ll Love This Spaghetti Squash Lasagna

There are plenty of reasons this spaghetti squash lasagna deserves a spot in your dinner rotation.
 

1. It’s Lower in Carbs

Traditional lasagna noodles are loaded with carbs, but spaghetti squash lasagna swaps them for a vegetable that’s naturally light.
 
That means you can enjoy a big, cheesy slice without feeling weighed down.
 

2. It’s Sneakily Healthy

Spaghetti squash is packed with fiber, vitamin C, and antioxidants.
 
So when you make spaghetti squash lasagna, you’re basically sneaking a serving of veggies into a comfort food classic.
 

3. It’s Make-Ahead Friendly

You can assemble your spaghetti squash lasagna a day ahead and keep it covered in the fridge.
 
Just add a few extra minutes to the bake time, and dinner is ready whenever you are.
 

So, How Do You Make Spaghetti Squash Lasagna?

You make spaghetti squash lasagna by roasting the squash, layering the strands with sauce and a creamy ricotta filling, and baking everything until golden and bubbly.
 
It’s a lighter take on a classic that still delivers all the cheesy, saucy comfort you want.
 
Once you know how to make spaghetti squash lasagna, you can tweak it with your favorite proteins, cheeses, and spices to make it your own.
 
So grab a squash, preheat that oven, and give this spaghetti squash lasagna a try this week.