Creamy Buffalo Chicken Casserole



By: The Real Food Dietitians Posted: 3/8/23

This Creamy Buffalo Chicken Casserole upgrades classic buffalo chicken to a high-protein, veggie-loaded recipe. Freezer-friendly and ready in just 45 minutes, it’s great to make ahead of time for a quick dinner. Serve it on its own, or pair it with your favorite sides for a filling high-protein, low-carb meal that suits a variety of dietary needs. 

Serving of Creamy Buffalo Chicken Casserole with side or roasted broccoli on stone plate.

Recipe Highlights: Creamy Buffalo Chicken Casserole

This buffalo chicken casserole is one recipe you’ll want to keep in your arsenal to come back to again and again because it: 

  • Utilizes healthful ingredients like lean chicken, whole eggs, and fresh vegetables
  • Is freezer-friendly, meaning you can prepare an extra batch or two for easy weeknight meals
  • Features familiar flavors in a creamy sauce for a recipe even the pickiest of eaters will be excited to eat

Upgrade Your Dinner With Creamy Buffalo Chicken Casserole

This buffalo chicken casserole is more than your average hot dish recipe. Featuring all the comforting warmth you look for in a casserole, it’s lightened up, veggie-loaded,  and given a boost of flavor from the creamy buffalo sauce. Made with tender chicken, cauliflower rice, red pepper, and carrots, this buffalo casserole is easy to modify to suit your flavor preferences and dietary needs. 

Process shot of Creamy Buffalo Chicken Casserole in white pan
Overhead view baked creamy buffalo chicken casserole in white pan with ranch drizzled over top.

Ingredients to Make Creamy Buffalo Chicken Casserole

Here are all the ingredients to gather to make this buffalo chicken casserole right away: 

  • Chicken breast – you’ll need pre-cooked chicken that has been shredded or chopped. To cook the chicken and keep it tender and juicy, we recommend our no-fail stovetop recipe for perfect chicken breasts or Instant Pot Shredded Chicken
  • Oil – we recommend extra-virgin olive oil or avocado oil because they are less processed and a neutral flavor 
  • Fresh vegetables – a combination of cauliflower rice, carrots, red bell pepper, and yellow onion forms the base of the casserole adding texture and nutrients 
  • Herbs and spices – you’ll need garlic powder, dried parsley, salt, and black pepper
  • Buffalo sauce – use your favorite purchased buffalo sauce (we love the Primal Kitchen No-Dairy Buffalo Sauce). Or, make your own using our easy Homemade Buffalo Sauce recipe
  • Mayo – this is what creates the creamy consistency. Use your favorite dairy-free mayo  (ours is Primal Kitchen Mayo, which is made with avocado oil) 
  • Eggs – an excellent source of protein and healthy fats, this helps create a richer flavor and acts as a binder to hold the casserole together
  • Toppings – we love to add even more flavor by topping this creamy buffalo chicken casserole off with a drizzle of ranch dressing (try our Homemade Ranch), hot sauce, or additional buffalo sauce, and a sprinkle of green onions 

Ingredient Spotlight: Chicken

One of the most versatile protein sources available, we use chicken in a wide variety of recipes like those included in this 14 sheet pan chicken recipes post. Not only is it budget-friendly and delicious, but chicken is also: 

  • An excellent source of complete protein
  • Rich in B vitamins
  • A good source of some minerals such as zinc, iron, and copper
Serving of Creamy buffalo chicken veggie casserole in a white skillet being scooped up with wooden spoon.

How to Make This Buffalo Chicken Casserole Recipe

One of the best things about casserole recipes is how simple they are to make, and this buffalo chicken casserole is no different. Here are the basic steps for how to assemble it: 

  1. Sauté the vegetables: Heat the oil in a large pan over medium-high heat, and add the vegetables and seasonings. Sauté the mixture, stirring occasionally until the onions are translucent and the rest of the vegetables are partially cooked through. Transfer the mixture to a casserole dish. 
  2. Create the sauce: In a bowl, whisk the buffalo sauce, mayo, and eggs together until smooth. 
  3. Combine the casserole: Mix the veggies, chicken, and sauce together in the casserole dish, and spread them out evenly. 
  4. Bake: Place the casserole in the oven, letting it bake until the center is set. Add your favorite toppings, and enjoy this buffalo chicken casserole recipe while it’s warm! 

For the complete directions, ingredient amounts, and nutrition analysis that lists calories, protein, carbohydrates, fiber, sugar, sodium per serving, scroll down to the recipe card below.

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Serving Suggestions

This creamy buffalo chicken casserole can easily be served on its own as it’s complete with plenty of satisfying protein, fats, and fiber. However, if you want to add more to your plate, there are plenty of options. To keep your meal healthful, we recommend pairing it with a green veggie such as broccoli, green beans, Brussels sprouts, or a side salad. Or, this casserole is also great served over a plain baked potato or sweet potato

Side view serving of creamy buffalo chicken casserole with roasted broccoli on blue and white plate

Frequently Asked Questions

Should I use raw or pre-cooked chicken in this buffalo chicken casserole recipe? 

You’ll want to use pre-cooked chicken for this recipe. Raw chicken will not have enough time to cook all the way through. You may use either pre-cooked shredded or cubed chicken.

How long does this recipe last? 

When placed in an airtight container and stored in the fridge, leftovers will stay fresh for up to 3 days. 

Can I freeze this casserole? 

Yes! This buffalo chicken casserole makes a great freezer meal. After cooking, allow the casserole to cool completely. Then, transfer it to an airtight container or freezer-safe bag, and store it in the freezer for up to 3 months. 

How should I reheat leftovers? 

When you’re ready to eat, let your leftovers thaw in the fridge overnight. Then, warm individual servings in a microwave-safe dish. Or, place them back in a casserole dish, and heat them in the oven. 

Our Favorite Meal-Prep Containers

These are our favorite meal-prep containers that we’ve been using for many years to pack away lunches and dinners that are ready to go. We love the airtight glass storage that is freezer-, microwave-, and dishwasher-safe and has lock-in-place lids. They sell out often, so snag an 8-pack set for yourself when they’re available!

Buy These Containers

Close up view serving of creamy buffalo chicken casserole on plate with roasted broccoli

When to Make Buffalo Chicken Casserole 

We’re particularly fond of this recipe as a freezer meal, and frequently include it in our meal prep lineup. However, it’s also great for a weeknight meal or pitch-in contribution that will satisfy even the hungriest of crowds. Whether you’re hosting a post-gameday feast or simply feeding your family, this flavorful casserole is a delicious and healthy option! 


  • 1 tablespoon avocado oil or olive oil
  • 3 cups fresh cauliflower rice (such as Taylor Farms, Eat Smart, Cece’s Veggie Co., or Earthbound) 
  • 2 medium carrots, diced
  • 1 small red bell pepper, diced
  • 1 medium yellow onion, diced
  • 1½ teaspoon garlic powder (or 34 garlic cloves, minced)
  • 1 teaspoon dried parsley 
  • Dash of salt and black pepper
  • 3/4 cup purchased buffalo sauce (or homemade buffalo sauce)
  • ⅓ cup mayo 
  • 2 whole eggs 
  • lbs. chicken breast, cooked and shredded (~3 heaping cups cooked shredded)
  • Optional garnishes: ranch dressing of choice (or homemade ranch), hot sauce or additional buffalo sauce, and sliced green onion
  1. Preheat the oven to 375ºF. Grease a 3-4 qt. casserole dish (9 x 13 also works) and set aside.
  2. In a large pan over medium-high heat, add oil. Once oil is hot, add the cauliflower rice, carrots, red pepper, yellow onion, garlic powder, dried parsley, and a dash of salt and black pepper. Sauté, stirring occasionally, until the onions are translucent and the veggies are partially cooked through, 10-12 minutes. Adjust heat as necessary. Transfer the veggies to the casserole dish.
  3. While the veggies are sautéing, in a bowl, combine the buffalo sauce, mayo, and eggs. 
  4. In the casserole dish, mix together the veggies, chicken, and the sauce mixture. Spread out the mixture in an even layer. 
  5. Bake, uncovered, for 20-25 minutes or until center is set. 
  6. Remove from oven and drizzle with ranch, hot sauce or additional buffalo sauce, sliced green onion, and and a dash black pepper. Serve hot.

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The recipe was originally published October 24, 2019; Blog post updated March 8, 2023 with no changes to the recipe. 

Nutrition Information

  • Serving Size: 1/8 of recipe
  • Calories: 325
  • Fat: 23 g
  • Sodium: 620 mg
  • Carbohydrate: 8 g
  • (Fiber: 2 g
  • Sugar: 3 g)
  • Protein: 21 g


© The Real Food Dietitians

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Overhead view creamy buffalo chicken casserole serving on plate with roasted broccoli.

Photo Credit: The photos in this blog post were taken by Jess of Plays Well with Butter

For ultimate success, we highly recommend reading the tips in the full blog post above. All photos and content are copyright protected. Please do not use our photos without prior written permission. If you wish to republish a recipe, please rewrite the recipe in your own unique words. Link back to the source recipe here on The Real Food Dietitians. Thank you!

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