three cheese spaghetti squash “lasagna”

Jessica Penner, RDEntree, Recipes5 Comments

Three Cheese Spaghetti Squash

I just had one of those delicious and rare evenings that left me energized and full of joy. What did I do? I went grocery shopping. It was magical.

Perhaps I should clarify.

I went grocery shopping…




It’s amazing the things you appreciate once you have a kid! 

The other day I started telling a story about my university days by saying, “we went to the mall in order to….” but I couldn’t finish the sentence. I couldn’t remember why we were at the mall. Then it hit me. We were just university students with nothing better to do, so we went shopping. That life seems like an eternity ago… just so far out of the realm of my current existence that I completely forgot what it was like! Just… go shopping for fun? That sounds ridonculous! 

But anyhow… how about some Three Cheese Spaghetti Squash Lasagna? Oh, you haven’t jumped onto the grain-free train yet? That’s okay. Me neither. I’m not really a believer in cutting out a whole food group. But I am a believer in eating more veggies and this is a great way to do that!

The spaghetti squash is aptly named. It truly looks and has the texture of spaghetti once it’s cooked! It’s something quite magical.

Three Cheese Spaghetti Squash

Why It’s A Smart Choice:

Make a pan of this, and you won’t have to cook again for a week! Eating the same thing everyday may or may not appeal to you. If it doesn’t, don’t fret because this recipe also freezes well! 

Each slice of this “lasagna” has over 2 servings of veggies. It’s also a very well-rounded source of most of your micronutrients: calcium, potassium, Vitamin A, iron, etc. 

If you give this recipe a go, let me know! Leave a comment, rate it, or snap a photo and tag it with #smartnutritionrecipes on Instagram!  I’d love to see your creations! Knowing someone has enjoyed one of my recipes always makes my day brighter. 


Three Cheese Spaghetti Squash Lasagna

  • Author: Jessica Penner, RdD


Substitute spaghetti squash for lasagna noodles and you get a lightened up, veggie-cantered lasagna!


  • 1 medium spaghetti squash
  • 1 lb lean ground beef
  • 1 large onion, diced
  • 4 cloves garlic, minced
  • ½ tsp fennel seeds
  • ¼ tsp chili flakes
  • 150g (½ package) of frozen spinach, defrosted
  • 1 red pepper, diced
  • 300g mushrooms, diced
  • 1 cup marinara sauce
  • ½ tsp salt
  • 750g cottage cheese
  • 3 eggs
  • ½ cup parmesan cheese, grated
  • 300g mozzarella cheese, grated


  1. Preheat oven to 400 degrees Fahrenheit.
  2. Cut the spaghetti squash in half, lengthwise. Remove the seeds and stringy bits. (Save seeds to roast later!). Place the squash halves, cut sides down, in a 9×13 pan. Fill with an inch or so of water. Bake for 30-40 minutes or until it’s easily pierced with a fork.
  3. Meanwhile, salute the ground beef with the onion, garlic, fennel seeds, and chile flakes. Once the meat is fully cooked, add in the spinach, pepper, and mushrooms. Cook until the mushrooms are soft then add the marinara sauce and salt.
  4. In a mixing bowl, stir together the cottage cheese, eggs, and parmesan cheese.
  5. Once the spaghetti squash is cooked, remove from oven and flip them over so that they are cut side up. Dump out the water in the pan.
  6. Using a fork, scrape the spaghetti noodles into the emptied 9×13 pan. Spread evenly.
  7. Layer the cheese mixture on top. Spread evenly.
  8. Layer the meat sauce on top. Spread evenly.
  9. Top with the grated mozza cheese. Cover with tented aluminum foil
  10. Bake in the heated oven for 30 minutes. Remove foil and broil the cheese until browned.
  11. Remove form oven and allow to sit for 10-20 minutes. This allows the casserole to set.


  • Serving Size: 12

Three Cheese Spaghetti Squash Lasagna

Calories: 286    Fat: 15g   Carbs: 12g   Fibre: 2g  Sugar: 5.5g   Protein: 26g 

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5 Comments on “three cheese spaghetti squash “lasagna””

  1. I made this for supper tonight and it was DE. LISH. Of course, I had to make some garlic bread too, for my carb-loving family. Your timing for this post couldn’t have been better. I had a tub of unopened cottage cheese in my fridge that was past the best before date (it was still good) and I had a spaghetti squash in my pantry that my husband had brought home from work from a colleague. And I had the time and energy to make it because my mom was babysitting the kids today. 🙂

  2. As a squash newb- I’m guessing I remove the seeds and gunk before roasting? Also, any tips on slicing the squash open? I got it, but it took a little more creative knife work than I’m comfortable with…

    1. Thanks for pointing that out! I’ll have to add that extra info into the recipe. But, yes, remove the seeds and gunk before roasting! As for slicing the squash open… if you can slice the stem part off and then place the cut side down on the cutting board, it won’t rock while you then slice it in half from the top. Also… I highly recommend having a good, sharp chef’s knife. It makes the job much easier and safer!

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