Chicken Cauliflower Casserole

This chicken cauliflower casserole is layered with tons of delicious flavor. Juicy rotisserie chicken is mixed with tender cauliflower, mushrooms, spinach, and a blend of melted cheese. Everything's tossed in a creamy sauce and topped with crispy panko bread crumbs. You're going to love eating this casserole almost as much as you'll love making it!

The Best Chicken Cauliflower Casserole

This chicken cauliflower casserole recipe combines simple ingredients and transforms them into a warm, hearty, comforting casserole the whole family's going to love!

It has a ton of flavor from the rotisserie chicken, veggies, and ooey-gooey melted cheese. Then the casserole is taken to another level with the addition of crispy bread crumbs on top.

The whole dish gets baked to golden brown perfection, and the balance of flavor and texture is irresistible. From the tender cauliflower to the perfectly cooked chicken and cheesy filling, it's just so satisfying!

This cauliflower chicken casserole is the perfect casserole recipe to make for those hectic weeknight dinners. You can have the dish ready to cook in minutes and still have plenty of time to whip up a tasty side dish to go with it, like these Bisquick cheddar bay biscuits or this 4 ingredient pasta salad for the perfect comfort food meal.

Why This Recipe Works

It's simple to make. All you have to do is boil the cauliflower, make the sauce, then add everything together and bake the casserole. It'll take you no more than 10 minutes to prepare!

It's so healthy. This casserole makes a high protein, low carb casserole that's mostly made up of veggies, though you'd never be able to tell by how delicious it is!

A guaranteed crowd-pleaser. Whenever I make this casserole for a family dinner or get-together, it's always a hit. Even the pickiest of eaters will be going back for seconds!

Customizable. Just like this chicken bacon ranch casserole, this recipe is easy to modify. You can add, swap, or switch up whatever you want to make it uniquely yours.

Ingredients

This chicken cauliflower casserole recipe is made with really basic ingredients. Honestly, you probably have most of them on hand already.

Here's everything you'll need to make chicken cauliflower casserole:

• 1 small head cauliflower, cut into florets
• 2 cups shredded rotisserie chicken
• 2 tablespoon butter
• 3 tablespoon flour
• 1 ½ cups milk
• Salt and pepper, to taste
• 1 cup shredded cheddar
• ½ cup mozzarella cheese
• 2 cups baby spinach
• ¾ cup chopped mushrooms
• 3 tablespoon panko breadcrumbs, optional, but they give a nice crunchy touch

If you're looking for more chicken casserole recipes, you have to check out this poppyseed chicken casserole and this teriyaki chicken casserole recipe next!

How To Make Cauliflower Chicken Casserole

1. Prep work: Preheat the oven to 375° (190°C) and grease a 9-inch baking dish with some olive oil or nonstick cooking spray and set it aside.

2. Cook the cauliflower: Boil the cauliflower for 5 minutes, then drain and set it aside for later.

3. Make the sauce: While the cauliflower is boiling, melt butter in a large saucepan, then add flour and cook until fragrant. Stir in the milk and season to taste with salt and pepper.

4. Assemble the casserole: Add the cooked cauliflower to the saucepan along with the chicken, mushrooms, spinach, shredded cheddar cheese, and mozzarella cheese. Stir to fully combine everything, then transfer the chicken and cauliflower mixture to the prepared baking dish.

5. Bake and serve: Bake the casserole, covered, for 20 minutes. Then remove the foil and bake for an additional 20 minutes. Let the casserole cool briefly before slicing and serving. Enjoy!

Tips To Make The Best Recipe

• Use sour cream, cream cheese, or condensed soup instead of milk for a creamier casserole.
• Use frozen cauliflower florets if you don't have fresh. Just make sure to thaw and drain them before adding them to the casserole.
• Use any fully cooked chicken breasts you want, like leftover shredded chicken from the night before.
• Experiment with adding ingredients like garlic powder, onion powder, chili flakes, or parmesan cheese for extra flavor.
• Make steamed cauliflower the day before to save prep time.
• Add cooked rice or pasta to make a heartier casserole recipe.
• Double or triple the recipe because everyone will want seconds!
• Garnish the casserole with sliced green onions for a pop of color.

How To Store Chicken Cauliflower Casserole

In the fridge: Store the leftover cauliflower chicken bake in an airtight container or put a lid on the baking dish and keep it in the fridge for up to 4 days.

In the freezer: Allow the leftover casserole to cool completely, then transfer it to a freezer-safe container or bag and freeze for up to 4 months.

Reheating: Put the leftover chicken casserole back in a casserole dish and heat in the oven at 350°F for about 10-15 minutes or until it's warmed through. You can also microwave single-servings of the casserole in 20-second intervals until it's fully reheated. Allow the frozen casserole to thaw overnight in the fridge or add more reheating time.

FAQS About This Chicken Cauliflower Casserole

What can I serve with chicken cauliflower casserole?

Chicken cauliflower casserole tastes great served alongside garlic bread, zucchini tomato casserole, or this La Scala chopped salad.

Can I prepare this casserole ahead of time?

Yes, you can easily assemble the casserole and store it in the fridge overnight or until you're ready to bake. Then just bake it and add a few more minutes since it'll be chilled. Making chicken cauliflower casserole ahead of time is super convenient, and it's the perfect make-ahead dish if you're hosting!

What is the key to making a good casserole?

The key to making a good casserole is to choose the right-sized baking dish so the casserole cooks evenly. You'll also want to make sure there's no extra moisture from frozen vegetables or cooked meat, otherwise, it will make for a mushy casserole.

More Casserole Recipes

• Vegetable casserole
• Baked bean casserole
• Macaroni corn casserole
• Tuna rice casserole
• Ultimate chicken casserole
• Hamburger rice casserole
• Velveeta broccoli casserole