Buffalo Chicken Casserole (Whole30 Paleo) 
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Buffalo Chicken Casserole (Whole30 Paleo) – this spaghetti squash casserole will have everyone going back for seconds. Huge chicken wing flavor, packed with protein and veggies, and gluten/carb free!
Classic buffalo chicken wing flavor in a comforting casserole with absolutely zero carbs, gluten, or dairy! It may not be the prettiest, and I know I say this a lot, but I’m calling this my new favorite recipe! Whether you stick to a Whole30/Paleo diet or not, this Buffalo Chicken Spaghetti Squash Casserole is a must make.
Made with spaghetti squash, shredded chicken, veggies, eggs, and buffalo sauce, this recipe does involve a few steps in the prep stage. I always prefer simple recipes that don’t require multiple steps to make, but this one is worth the extra bit of time. I usually make this Buffalo Chicken Casserole on Meal Prep Sunday, when I’m already doing lots of prep, and eat it all week for lunch. It’s also great for feeding a crowd or a family friendly dinner.
Skeptical about spaghetti squash? I was too but am now a spaghetti squash lover! It has such a mild flavor that pairs well with just about anything. It’s delicious topped with a Homemade Bolognese sauce and perfect in casseroles. It’s also super easy to prepare by roasting in the oven or steaming in the Instant Pot.
How do you cook a Spaghetti Squash?
My favorite method is in the oven. Preheat your oven to 400 degrees and line a baking sheet with parchment paper. Cut the squash in half and scoop out the seeds. Place cut side down on the baking sheet and bake for 40 minutes. Remove from oven, let cool slightly, and using a fork, scoop out the insides.
Spaghetti squash can also be cooked in the Instant Pot. Simply cut in half, scoop out the seeds, and cook with some water in the bottom of the pot. This method is a little quicker, but if you have a very large squash, it may not fit.
How to Make Buffalo Chicken Spaghetti Squash Casserole
Prep your Whole30 Mayo or use a compliant brand (like this Primal Kitchen version.)
Try using the Instant Pot to prep the shredded chicken and spaghetti squash or roast the squash in the oven. Rotisserie chicken can also be used here.
While the chicken and spaghetti squash are cooking, chop and cook your veggies and whisk the eggs.
Throw it all together with the hot sauce and mayo and bake!
Buffalo Chicken Casserole Variations
Add other finely diced veggies to the carrot/celery/onion mixture. Bell peppers and green onions are great additions.
Feel free to up the hot wing flavor by adding more buffalo sauce if you like extra heat.
Try substituting hash brown potatoes for the spaghetti squash!
For Meal prep, package individual servings in these glass containers for easy grab-and-go meals.
Topped with Homemade Whole30 Ranch Dressing, this casserole is sure to become a fast favorite and a staple on your Whole30 meal plan list! Looking for more Whole30/Paleo friendly recipes? Check out my Whole30 Survival Guide and recipe index!
Buffalo Chicken Casserole (Whole30 Paleo)
Ingredients
- 2 cups cooked shredded chicken breast
- 1 large spaghetti squash, cooked, see cooking instructions below
- 1 teaspoon cooking oil of choice (olive, avocado, coconut)
- 1/2 cup each diced carrots, celery, and onion
- 1 1/2 teaspoons minced garlic
- 1/2 cup hot sauce (such as Franks)
- 1/4 cup homemade mayonnaise or store bought compliant brand
- 1 teaspoon fine sea salt
- 4 eggs, beaten
Instructions
- Preheat oven to 350 degrees. Prepare a 13 X 9 baking dish with cooking spray.
- In a large skillet, heat cooking oil. Add carrots, celery, and onion to the pan and cook, stirring often, until veggies are beginning to soften. Add garlic and cook for an additional 1-2 minutes.
- In a large bowl, combine chicken, spaghetti squash, cooked veggies, hot sauce, mayo, and salt. Fold in beaten eggs and stir until well combined.
- Bake for 40-45 minutes until the top of the casserole forms a nice crust and is beginning to brown. Serve with Homemade Ranch Dressing or other compliant brand.
Notes
Nutrition
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Vegetarian
Keto Friendly
Dairy Free
27 Comments on “Buffalo Chicken Casserole (Whole30 Paleo)”
This is my first time trying this recipe (and baking a spaghetti squash!) – my goodness, this dish is AMAZING! Thank you for sharing, I absolutely love anything buffalo and decided to try this out while on my first Whole 30. Super tasty!
Thanks so much, Emily! Glad you liked it!
I made this tonight and am thrilled with the flavor and texture. I was nervous I would not like spaghetti squash, but I’m this recipe it adds a nice texture and soaks up all the yummy buffalo flavor. I skipped the ranch and carrots and topped with scallions. Delicious! Thanks for the keeper whole30 recipe!
Thanks, Emily! This recipe converted me to spaghetti squash too – I love it now!
Made this the other night and fell in love with it!! Do you think it would freeze well?
Hey Ciara – thanks so much! I love it too. I haven’t tried it but yes, I think it would freeze well!
I loved this recipe. I never anticipated that it would be so good as the ingredients did not seem to go together. Boy, was I wrong! It is delish comfort food and I have been eating it for lunch for two days. Next time I make it, I will double and freeze
My favorite whole30 recipe so far! Hubby and kids approved also! I was worried without cheese, it wouldn’t taste like a casserole I’m used to, but man was I wrong. Will be making this again soon!
Yay, thank you so much!!
I could have eaten the whole pan. My husband, who is extremely hard to please when it comes to food, especially ‘healthy’food…went back for 2nds! Absolutely. Scrumptious.
Thanks, Judi! You made my day 🙂
Could this be made with butternut squash instead of spaghetti? And omit the carrots to balance out the sweetness?
I made this the other day, and I’m eating it right now! It is delicious and so easy! I cooked the spaghetti squash in the Instant Pot (my new favorite way) because it was so much quicker and yielded the same results as the oven. The flavor is amazing, all of the ingredients work well together, and I am happy to eat this because it is healthy, great-tasting and filling!
Wow! This was so flavorful and filling. Tastes like buffalo chicken dip without all the fat and calories! 5 stars ⭐️ ⭐️⭐️⭐️⭐️
Absolutely delicious!!! The flavors were amazing! My family devoured it!
This is delicious! How many servings would you say this makes?
It’s a 9×13 pan, so I like to cut it into 8 generous sized pieces!
Really great! I didn’t think 1/2 cup of hot sauce was going to be enough, but I followed the recipe and it was perfect! Served with dump ranch and everyone loved it.
Thank you! Glad everyone enjoyed it!
Do you put raw chicken into the combine ingredients of squash or cooked?
I use cooked shredded chicken!
This dish is amazing! It was my first time trying spaghetti squash ever and this dish just makes it all come together so heavenly! Me and my husband enjoyed every bite. Thank you so much
So good! I think I could have eaten the whole thing, but I shared (this time).
This is incredible! So good – and very satisfying, but so healthy. I added green onions on top and it was fabulous.
this was amazing! thanks for the recipe…I added nutritional yeast and some alternative cheese slices the first time….the second time, I left out the veggies bc I didn’t have any on hand and used feta cheese.
forgot to add the rating…and the husband and all 4 kids loved it, too!
Would it be fine to use Sweet Potato noodles or zucchini noodles instead of Spaghetti squash? Spaghetti squash is not currently in season where I am located.