If you’re looking for a breakfast (or brunch!) dish that’s packed with flavor and will wake everyone up in the best way, this Buffalo Chicken Breakfast Casserole is it.
It’s cheesy, hearty, and has just the right amount of spice to make your taste buds dance. Plus, it’s super easy to throw together!
Whether you’re feeding a hungry family or making it for a potluck, this recipe is a crowd-pleaser. And guess what? You can prep it the night before! Let’s get cooking!
What You’ll Need
Ingredients:
- 2 cups cooked shredded chicken (rotisserie chicken works great!)
- 6 large eggs
- 1 cup milk (whole or 2% preferred)
- 1/2 cup Frank’s RedHot sauce (or your favorite buffalo sauce)
- 1 cup shredded cheddar cheese
- 1/2 cup shredded mozzarella cheese
- 2 cups frozen hash browns (thawed)
- 1/4 cup green onions (thinly sliced)
- 1/4 teaspoon garlic powder
- 1/4 teaspoon onion powder
- Salt and pepper to taste
- Optional: Ranch dressing for drizzling on top
Tools You’ll Need:
- Large mixing bowl
- Whisk
- 9×13-inch casserole dish
- Non-stick spray

Pro Tips
- Rotisserie Chicken Shortcut: Save time by grabbing a rotisserie chicken from the store—just shred it up and it’s ready to go!
- Control the Spice: Adjust the buffalo sauce to your family’s spice preference. You can even use a mild version for the kiddos.
- Don’t Skip the Spray: Be generous with the non-stick spray or buttering your casserole dish to prevent sticking.
- Thaw the Hash Browns: Make sure the hash browns are fully thawed so they bake evenly.
- Cheese Lovers Unite: Feel free to add extra cheese on top before baking if your family can’t get enough!
Possible Substitutions & Variations
- No Buffalo Sauce? Use BBQ sauce for a smoky twist.
- Dairy-Free? Substitute milk and cheese with dairy-free alternatives.
- Extra Veggies? Add some diced bell peppers or spinach for a boost of color and nutrition.
- Swap the Hash Browns: Use diced potatoes or even sweet potatoes for a fun variation.
Make-Ahead Tips
Assemble the casserole the night before, cover it with plastic wrap, and store it in the fridge. In the morning, simply pop it in the oven and bake. Perfect for busy mornings!
How to Make Buffalo Chicken Breakfast Casserole
1. Preheat the Oven
Preheat your oven to 375°F (190°C). Spray your 9×13-inch casserole dish with non-stick spray.
2. Whisk the Egg Mixture
In a large mixing bowl, whisk together the eggs, milk, buffalo sauce, garlic powder, onion powder, salt, and pepper until smooth.

3. Combine the Ingredients
Add the shredded chicken, hash browns, 1/2 of the cheddar cheese, and mozzarella cheese to the egg mixture. Stir until everything is well combined.

4. Assemble the Casserole
Pour the mixture into the prepared casserole dish. Sprinkle the remaining cheddar cheese on top for that golden, cheesy finish.

5. Bake
Place the casserole in the oven and bake for 35-40 minutes, or until the center is set and the top is golden and bubbly.

6. Garnish and Serve
Once out of the oven, let the casserole rest for 5 minutes. Garnish with sliced green onions and drizzle with ranch dressing, if desired. Slice into squares and serve warm.

Leftovers & Storage
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat individual portions in the microwave or oven. This casserole also freezes well—just wrap tightly and freeze for up to 3 months!
Conclusion
This Buffalo Chicken Breakfast Casserole is a fun, bold twist on the classic breakfast bake, and it’s sure to become a family favorite. Whether it’s a weekend brunch or a special occasion, this dish will have everyone asking for seconds. Give it a try and let me know how it turns out in the comments below—I’d love to hear what your family thinks or any fun variations you tried! Happy cooking! 😊