Buffalo Chicken Spaghetti Squash Casserole
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This Healthy Buffalo Chicken Spaghetti Squash Casserole is the perfect quick weeknight dinner. Low carb, full of flavor – it’s gluten free and SO delicious! Easily made paleo + whole30 by leaving off the cheese!
This post was originally shared in April of 2018 but has since been updated.
So like most people, I love buffalo chicken anything… healthy buffalo turkey meatballs, healthy buffalo chicken dip, buffalo chicken soup, wraps, buffalo chicken spaghetti squash boats.
I know I’m not the only one that loves it too. You guys love these Buffalo Turkey Meatballs, and these Buffalo Chicken Spaghetti Squash Boats are one of the most popular recipes on my sites! You also love this Greek Chicken Spaghetti Squash Bake.
This recipe is basically a combo of the two!
Traditional casseroles are NOT my thing. I had that they use icky canned soup and mystery ingredients – but when a casserole is veggie packed + delicious – I’m all for it! (This Chicken and Rice Casserole and Buffalo Chicken Casserole are proof of that!)
This Healthy Buffalo Chicken Spaghetti Squash Casserole can easily be made paleo/whole 30 if you just leave off the blue cheese. I have made it like this before, and it’s SO yummy!
We also have a Buffalo Chicken Casserole with Potatoes Recipe that is just as delicious!
Ingredients for Buffalo Chicken Spaghetti Squash Casserole:
To make this buffalo chicken spaghetti squash casserole you’ll need:
- shredded chicken – you can make crockpot shredded chicken, instant pot shredded chicken or use a rotisserie chicken
- buffalo sauce
- olive oil
- blue cheese (optional)
- cooked spaghetti squash
- egg
- garlic powder, onion powder, pepper
This Healthy Buffalo Chicken Spaghetti Squash Casserole is something you can get on the table in just about 30 minutes if you time it right or plan ahead.. so let me explain. Ya gotta multi-task!
It’s important that you get the spaghetti squash in the microwave or Instant pot to cook first. That takes the longest. Here’s how to do that.
How to cook spaghetti squash:
Here is a post on how to cook spaghetti squash in the microwave and here is a post about how to cook spaghetti squash in the instant pot. Both methods take about 10 minutes.
- Slice spaghetti squash, put in your instant pot with 1 cup of water.
- Cover + set pot to sealing for 5 minutes.
- Manually release the pressure + shred your cooked squash with a fork.
How to make Buffalo Chicken Casserole:
To make this casserole:
- Whisk together your eggs, olive oil, spices + buffalo sauce.
- Add in a bowl with cooked chicken, spaghetti squash, and cheese if you’re using it.
- Place in a baking dish. Bake in the oven per the instructions below.
Time Saving Tips for making this Buffalo Chicken Spaghetti Squash Casserole
To assemble this meal quickly – cook all the parts ahead of time!
- Spaghetti Squash: Here is a post on how to cook spaghetti squash in the microwave and here is a post about how to cook spaghetti squash in the instant pot. Both methods take about 10 minutes.
- Chicken: You have a few options for shredded chicken. You can make my Easy Instant Pot Shredded Chicken, you can cook shredded crockpot chicken (you’d have to do it the day before or in the morning) OR you can buy a rotisserie chicken and shred it up.. any method will work.
- While your chicken and spaghetti squash are cooking – you can prep the other minimal ingredients, so that you can get it in the oven in no time! Easy peasy!
How to serve/store Buffalo Chicken Spaghetti Squash Bake:
Can this recipe be made ahead? Absolutely! I actually recommend assembling the casserole ahead of time. You can put everything in the dish and leave it in your refrigerator until you are ready to bake. You can also bake it ahead of time and reheat.
Can this recipe be reheated? Yes, this recipe also tastes great when reheated .. Simply reheat in a microwave or in an oven set at 350°F until center is cooked through.
I think you’re going to LOVE this Healthy Buffalo Chicken Spaghetti Squash Casserole as much as we did – Tyler took it for lunch 2 days after making it – and he hates leftovers. That’s how good it was 🙂
Substitutions for this spaghetti squash bake:
Buffalo Sauce: You can use any buffalo sauce you like. Frank’s Red Hot is Whole30 compliant and it’s also our favorite, but any buffalo sauce will work!
Veggies: Feel free to add other finely diced veggies to the carrot/celery/onion mixture. Bell peppers and green onions are great additions.
Cheese – Simply omit the cheese to make this recipe paleo/Whole30 friendly
Blue Cheese– If you don’t like blue cheese, omit it or sub in cheddar, goat, or mozzarella
Other Casseroles: We have other casserole recipes with different flavors if you’re looking to switch it up. Mexican Chicken Casserole, Spaghetti Squash Casserole, Chicken and Rice Casserole
Other healthy dinner recipes:
Looking for other easy meals? Check out these 40+ Healthy Dinner Recipes. Click here to grab our free healthy 30 minute dinners cookbook.
Love chicken? Check out our favorite healthy chicken breast recipes!
Healthy Buffalo Chicken Spaghetti Squash Casserole
Ingredients
- 3 cups spaghetti squash, shredded (one medium spaghetti squash)
- 2.5 cups shredded chicken (1 lb chicken)
- 1/2 tablespoon olive oil
- 1 egg
- 1/2 teaspoon onion powder
- 1/4 teaspoon black pepper
- 1/2 teaspoon garlic powder
- 1/3 cup Frank’s Red Hot
- 1/2 cup blue cheese crumbles optional – (omit if Whole30/paleo)
Instructions
- Preheat oven to 400 degrees
- Cook spaghetti squash. For microwave: Fill a microwave safe glass dish with 1 inch of water. Slice spaghetti squash in half + place face down in water. Microwave on high for 10 minutes until cooked. Remove from microwave + shred spaghetti squash. For instant pot: Slice spaghetti squash, put in your instant pot with 1 cup of water. Cover + set pot to sealing for 5 minutes. Manually release the pressure + shred your cooked squash with a fork!
- While spaghetti squash is cooking, make shredded chicken. You can make instant pot shredded chicken, crockpot shredded chicken, boil on the stove for 10 minutes, or buy a rotisserie chicken + shred.
- In a bowl, mix together olive oil, egg, spices+ Frank's Red Hot. Whisk until combined.
- Add cooked spaghetti squash, shredded chicken + spice/sauce mixture to a bowl and stir until combined. Stir in blue cheese crumbles.
- Pour mixture in a greased 8×8 baking dish. Bake at 400 for 25 minutes or until top starts to brown. You can broil for one minute to get a crispy top.
Video
Notes
- Here is a post on how to cook spaghetti squash in the microwave and here is a post about how to cook spaghetti squash in the instant pot. Both methods take about 10 minutes.
- The other key to this recipe is the chicken. You have a few options for shredded chicken. You can make my Easy Instant Pot Shredded Chicken, you can cook the chicken in the crockpot (you’d have to do it the day before or in the morning) OR you can say whatevs and just buy a rotisserie chicken and shred it up.. any method will work.
- While your chicken/spaghetti squash are cooking – you can prep the other minimal ingredients, so that you can get it in the oven in no time! Easy peasy!
This recipe has become a staple in the rotation for our family. It is filling, hearty, and easy to throw together. We alternate between using chicken and ground beef, and usually throw a bag of whatever veggies we have into the mix too. It’s so easy to adjust to what you have on hand and to adapt to different dietary needs.
This is such a delicious and different way to incorporate spaghetti squash. It was a family dinner hit!
This was very good and spicy because I used Frank’s Extra Hot sauce, oops. I also used canned chicken and added a panko topping since I’m not gluten-free. Oh, and sautéed onions like someone suggested.
I love
This stuff! I make it for myself for work lunch- my 17 year old son grabbed some one day and wants it for lunches as well! Really addictive
This was tasty! My guy doesn’t love spaghetti squash but I told him it doesn’t really taste like the squash itself. He tried it and really liked it! We added a thin layer of Frank’s Red Hot wing sauce on each slice or serving before reheating it and it was great! Thanks for a good recipe to make!
So glad you liked it, Tara! Thank you so much!
Oh my glory❣️This is soooo good! I’m usually not all about buffalo but this sounded good so I tried it. Easy and quick and tastes better than good! A+ 💖
Absolutely amazing, I did add some broccoli for substance.
This is my all-time favorite spaghetti squash recipe. I’ve made it dozens of times, and I’m never disappointed.
My wife and I regularly have spaghetti squash as a low carb veggie side with dinner. I made this recipe for the first time for Super Bowl Sunday 2023 dinner. It’s GREAT! Great taste, good heat and all around wonderful.
A few comments on the recipe itself –
1. I cook the squash as per label on the store bought squash. Split, remove seeds, put cut side down in casserole dish, pierce outer skin with knife in several places and bake at 350 degrees for 45 minutes. No water is added to pan. Let cool to touch or at least cool enough till you can hold with a pot holder and remove ‘innerds’ with a fork
2. While the squash cooled, I cooked the chicken in the already warm oven. I used thin chicken breasts because that was the only 1 pound pack in my store.
3. Rather than follow the recipe exactly, I mixed all ingredients in a bowl except for chicken and squash.
4. Then I stirred in the chicken and lastly stirred in the squash.
It made no difference that I added the blue cheese crumbles early and not at the end.
As I already said, this receipe is a winner. The Franks hot sauce gives it a meaningful but not overpowering level of heat. It tastes great. I’m certain we’ll make this again and again.
Wow! I made this tonight because I had a spaghetti squash that I was trying to find a new spin to make it exciting. Made this just as written adding 1 small onion and 4 large carrots chopped. This blew mine & my husbands mind! So easy too, big plus! Great healthy new recipe to add to the rotation. Thank you!
Could you use egg whites or no eggs?
I think it would work with no eggs!
This was excellent! My husband and I could have easily eaten this entire casserole. I had to force us to save some for lunch tomorrow. We’ll definitely make this again. Thanks!
This recipe was so flavourful, and simple to do. This will be a stable in our home.
Love this recipe so much!! It’s quick and easy and so good!! It’s a good-for-you meal that even kids will eat (my 4 year old loved it!)!!
love!!! the perfect easy weekend meal
LOVE!!! so easy and delicious. the perfect weekend meal!
I love this easy, healthy recipe! Instead of the seasonings, I usually add about a tablespoon of Ranch seasoning powder. I also add a few stalks of chopped up celery for crunch.
Have made this recipe multiple times switching up the veggies and types of cheeses. Love all of them! Even brought it to a sick friend as a get well soon gift and she loved it as well!
Finding a good recipe for spaghetti squash has been hard in the past but now I come to you for all of them! This one is amazing. My boyfriend is obsessed with anything buffalo chicken so I was excited to try this! We subbed the blue cheese since we aren’t a fan and used cheddar, it was delicious. Thanks again for another great recipe!
Kelly, this was really good! And I’m not a big Buffalo sauce fan! I saw the other recipe for spaghetti squash, I’m gonna try that! 😘
So happy you liked it!
Very nice & bar the shredding of the chicken it’s also quick.
I replaced the blue cheese with a 1/4 of a pot of Philadelphia & a handful of grated cheddar. I also added a dollop of cream, cayenne pepper & chilli flakes.
I had to substitute the hot sauce (can’t get that one here in the UK) with a bit of encona hot pepper sauce & siratcha hot chilli sauce.
It’s also delicious cold!
I’ll make it again for sure.
Glad you liked it! Next time try shredding your chicken with a hand mixer – saves a lot of time!
I loved your Buffalo Chicken casserole and Buffalo chicken spaghettis squash boats so decided I needed to try this! It definitely did not disappoint. I actually added in some broccoli and Greek yogurt (similar to the Buffalo boats because I liked them so much). Definitely please keep doing spaghetti squash recipe!
So happy you liked it, Mindy! We just shared a recipe! You’ll have to try this next
This recipe is amazing! So easy and quick to make. This will definitely meal prep rotation. Thanks for such a great recipe!!
So glad you liked it! Thanks Amanda!
This recipe is ABSOLUTELY FANTASTIC. Im currently eating it as I write! I added extra salt and lots of bleu cheese. Mouth watering. Thank you so much!
Thanks, Mary! Glad you liked it!