Turkey Sausage & Mushroom Spaghetti Squash Casserole

It’s Improv Challenge day for March, and this month everyone is cooking up recipes using Sausage & Mushrooms. I’m guessing there won’t be any desserts this time around. My inspiration was the classic baked ziti, with all of its saucy, cheesy goodness, and stepped it up a bit in flavor and nutrition. Whether you want leftovers to put in the freezer or have to feed a crowd, you’ve gotta try this Turkey Sausage & Mushroom Spaghetti Squash Casserole.

Turkey Sausage & Mushroom Spaghetti Squash Casserole

Turkey Sausage & Mushroom Spaghetti Squash Casserole | cupcakesandkalechips.com | #glutenfree #dinner

I’m sorry people. No matter what I do, I can’t make spaghetti squash casserole-type dishes look appetizing. Remember my Spaghetti Squash Pastitsio? One of the most delicious things I have ever made for dinner. But seriously, looks like a creature from the deep. It makes me think of the Pirates of the Caribbean movies. Did I say this last time? Same thing holds true with this recipe.

The other thing I can’t do is tell you that the whole family loved this. The Bug loathes spaghetti squash. He will eat anything covered in cheese. Anything except spaghetti squash. I baked it while he was at preschool and had it all scraped out and sitting in a bowl when he got home.

“Mom, what’s that yellow stuff?”

“Spaghetti squash for dinner tonight.”

“Oh, I’m not eating dinner tonight.”

Awesome! And he didn’t really. Double awesome!

However, if you are going to let the review of a highly opinionated and stong-willed 3 1/2 year old influence your decision to try this dish, well, then I guess it’s appearance won’t change your mind. Hopefully this will - The Hubby, Smiles and I loved this Turkey Sausage & Mushroom Spaghetti Squash Casserole. Baby Smiles was wearing the stuff. ‘Nuff said. I mean, it’s like baked ziti, only with more flavor from the turkey sausage, more texture and meatiness from the mushrooms, and more veggies and less carbs and stuff because of the spaghetti squash. And then it’s made all creamy and gooey and cheesy with ricotta and mozzarella and parmesan.

Turkey Sausage & Mushroom Spaghetti Squash Casserole | cupcakesandkalechips.com | #glutenfree #dinner

The other thing – this recipe feeds, like, eight to ten people. I started making it, got my little casserole dish out, and was like, “Umm, no.” So I broke out the 9×13 stoneware and it was perfect, except that it looked like I was cooking for wayyy more than my little family of four that includes an anti-spaghetti-squash member. Half of mine is still in the freezer, ready to break out on a busy night!

Annnnd, my new genius discovery – instead of breaking out the chainsaw to hack your spaghetti squash in half before you cook it in the oven of microwave, if you have the time, did you know you could just prick it with a fork and throw the whole thing in the oven?!?! Brilliant!

Turkey Sausage & Mushroom Spaghetti Squash Casserole | cupcakesandkalechips.com | #glutenfree #dinner

As I mentioned, this recipe is part of the Improv Challenge, which is a blog hop hosted by Kristen of Frugal Antics of a Harried Homemaker. A theme is given, which is two assigned ingredients. Then it is up to the participating bloggers to let the creative juices flow, and see what they can come up with. Then on the third Thursday of the month, we will all publish our new recipes based on the theme. If you are have a blog and would like to join us, click on the picture to the below to learn more. If you are new to my blog, finding me because you have been following the Improv Challenge, then WELCOME!

Improv Challenge

Check out the links at the bottom of this post to more great Sausage & Mushroom Recipes!  I can’t wait to see what everyone has come up with!

Turkey Sausage & Mushroom Spaghetti Squash Casserole | cupcakesandkalechips.com | #glutenfree #dinnerIs there one food that you just will not eat, regardless of how it is prepared? 

Turkey Sausage & Mushroom Spaghetti Squash Casserole
Prep time
Cook time
Total time
Take baked ziti up a notch by keeping all the cheesiness, but adding even more flavor and nutrition.
Recipe type: Casserole, Main
Serves: 8
  • 1 spaghetti squash
  • 1 tsp olive oil
  • half of a medium onion, chopped
  • kosher salt & pepper
  • 1 clove garlic, minced
  • one pound hot Italian turkey sausage, removed from its casings
  • one 10 oz. package mushrooms, sliced
  • one 28 oz. can crushed tomatoes (I use Tuttorosso, which has a little basil in it, so if you use a brand without basil, you may want to add a little fresh or dried)
  • one 15 oz. container ricotta cheese (I used part skim)
  • 1 cup (about 4 oz.) shredded mozzarella cheese
  • ¼ cup grated parmesan cheese
  1. Prepare the spaghetti squash by following these instructions or these instructions for cooking in the oven or these instructions for cooking in the microwave.
  2. Scrape out the “noodles” into a large bowl using a fork and set aside.
  3. Preheat oven to 400°F.
  4. Meanwhile, heat the olive oil in a large saucepan over medium heat.
  5. Add the onion, season with salt and pepper, and cook for about 3-4 minutes, or until onion starts to soften and become translucent.
  6. Add the garlic and cook for another minute or two.
  7. Add the turkey sausage to the skillet, and cook until nearly cooked through, crumbling it as it cooks.
  8. Then add the mushrooms and cook for another 3-5 minutes.
  9. Add the crushed tomatoes and heat through for a minute or two.
  10. Combine the sauce and the spaghetti squash, and transfer to a 9/13 casserole or glass baking dish.
  11. Place dollops of ricotta over the top of the spaghetti squash mixture and stir in partially.
  12. Top with shredded mozzarella and parmesan and bake for 25-20 minutes, or until cheese is melted and lightly browned, and casserole is heated through.
  13. Let sit for 5 minutes or so before serving.


Turkey Sausage & Mushroom Spaghetti Squash Casserole | cupcakesandkalechips.com | #glutenfree #dinner

Want some more casseroles?

Eggplant-Parmigiana-Parmesan-Pasta-Casserole-1-title.jpg Spaghetti-Squash-Pastitsio-With-Greek-Yogurt-Bechamel-3-title.jpg Two-Cheese-Butternut-Squash-Macaroni-Cheese-with-caption.jpg

And here are some from my friends…

Plus, check out what the rest of the Improv-ers are cooking up with…

Want to see lots more yummy food from me and my friends, and cute pictures of my kids? 

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  1. says

    I love spaghetti squash, too. Most of my kids will eat it in casserole form, it’s just when I leave it plain and then try to top it with a sauce that they start asking where the real pasta is hiding. Hopefully your little guy will change his mind with time. Then again, my 15 year old still won’t touch a mushroom, even when there is bribery involved.

  2. Lesa @ Edesia's Notebook says

    I recently tried spaghetti squash for the first time and my family liked it, so I will have to add this into the rotation. Yummy!

  3. says

    I’ve been wanting to try spaghetti squash but I haven’t found it where I live. Right now I am visiting my daughter in Providence and I picked one up in the grocery store last night. Can’t wait to try your recipe! I’ll have to adapt because she’s vegetarian but I think I can use some of those Smart Sausages since they have an Italian style recipe and it’s actually tasty.

  4. Sara says

    Finally made this tonight and it was fantastic! My husband loves spaghetti squash, but I’ve never been a fan. Every now and then, I make it for him, but this is the first time I’ve ever enjoyed it! In fact, I had three servings (yikes). So glad I found this on Pinterest. Thank you!

  5. vickie says

    I make zucchini lasagna (zucchini cut lengthwise in place of the pasta) all the time like this & the other night i made zucchini baked spaghetti. I have a veggetti (walmart) & you put your veggie in & turn till it makes strings like pasta. I love it & all my kids loved it also, although they are not super picky. I like spaghetti squash but my kids are not in love with it. I also make cauliflower pizza (cauliflower crust) which bbq chicken, bacon, & cheese is everyone’s favorite in my house :)

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