Name: Creamy Chicken and Spinach Casserole for Cozy Family Dinners
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Ingredients: 1 can Cooking Spray (Helps prevent sticking to the baking dish for easier cleanup.); 3 tablespoons Unsalted Butter (Can be replaced with olive oil for a lighter option.); 1 ½ cups Yellow Onion, finely chopped (Substitute with shallots for a milder taste.); 6 cloves Garlic, thinly sliced (Can use garlic powder (1.5 teaspoons) if fresh is not available.); 2 teaspoons Dried Italian Seasoning (Use a mix of oregano and basil as a substitute.); ¼ teaspoon Crushed Red Pepper (Omit or adjust based on spice preference.); 1 ¾ teaspoons Kosher Salt, divided (Sea salt can be substituted.); 3 tablespoons All-Purpose Flour (Cornstarch mixed with cold water is a gluten-free alternative.); 2 ½ cups Whole Milk (Lower-fat milk or non-dairy alternatives can be used.); 4 ounces Chive and Onion Cream Cheese (May substitute with plain cream cheese mixed with chives and onion powder.); 4 cups Rotisserie Chicken, shredded (Any cooked chicken can be used as an alternative.); 3 cups Long-Grain White Rice, cooked (Quinoa can be a low-carb substitute.); 2 packages (10 ounces each) Frozen Chopped Spinach, thawed (Fresh spinach can also be used.); 2 tablespoons Fresh Lemon Juice (Vinegar can substitute in a pinch.); 1 teaspoon Lemon Zest (Use bottled lemon juice as an alternative.); 8 ounces Part-Skim Mozzarella Cheese, shredded (Switch for cheddar or Monterey Jack for a different cheese flavor.); ¼ cup Parmesan Cheese, grated (Nutritional yeast is a good vegan alternative.)

There’s something heartwarming about the sight of a bubbling casserole fresh out of the oven, don’t you think? Our Creamy Chicken and Spinach Casserole is the perfect dish to add to your weeknight rotation, combining tender rotisserie chicken and vibrant spinach enveloped in a creamy sauce. Not only is this a comforting family favorite, but it also makes dinner prep a breeze—ideal for those busy evenings when you crave something homemade but don’t have hours to spend in the kitchen. Plus, with endless possibilities for variations, you can easily cater to dietary needs while keeping the comfort factor intact. What’s your favorite way to enjoy a cheesy casserole? Let’s dive into this delightful recipe together!

Why is this casserole a must-try?

Comforting Flavor: The Creamy Chicken and Spinach Casserole embodies the essence of home-cooked comfort food, enveloping tender chicken in a luscious creamy sauce that warms the soul.

Quick Prep: With just a few simple steps, this recipe is perfect for those hectic weeknights when you need a delicious meal fast.

Adaptable Ingredients: Easily customize it to fit your dietary preferences—swap rice for quinoa or add extra veggies like sun-dried tomatoes.

Family-Friendly: Loved by both kids and adults, this dish will quickly become a staple at your family dinner table.

Easy Cleanup: Made in a single baking dish, you’ll appreciate the minimal mess while indulging in maximum flavor!

For a more flavor-packed meal, don’t forget to check out my Garlic Parmesan Chicken or Cajun Chicken Pasta recipes!

Creamy Chicken and Spinach Casserole Ingredients

• Here’s what you’ll need to whip up this delicious comfort dish:

For the Casserole

Cooking Spray – Helps prevent sticking to the baking dish for easier cleanup.
Unsalted Butter (3 tablespoons) – Adds richness and flavor; can be replaced with olive oil for a lighter option.
Yellow Onion (1 ½ cups, finely chopped) – Provides sweet aromatics; substitute with shallots for a milder taste.
Garlic (6 cloves, thinly sliced) – Enhances flavor; can use garlic powder (1.5 teaspoons) if fresh is not available.
Dried Italian Seasoning (2 teaspoons) – Adds herbs and depth; use a mix of oregano and basil as a substitute.
Crushed Red Pepper (¼ teaspoon) – Introduces a hint of heat; omit or adjust based on spice preference.
Kosher Salt (1 ¾ teaspoons, divided) – Essential for flavor enhancement; sea salt can be substituted.
All-Purpose Flour (3 tablespoons) – Thickens the sauce; cornstarch (1 tablespoon mixed with cold water) is a gluten-free alternative.
Whole Milk (2 ½ cups) – Creates the creamy sauce base; lower-fat milk or non-dairy alternatives can be used.
Chive and Onion Cream Cheese (4 ounces) – Adds creaminess and flavor; may substitute with plain cream cheese mixed with chives and onion powder.
Rotisserie Chicken (4 cups, shredded) – Provides convenience and flavor; any cooked chicken can be used as an alternative.
Long-Grain White Rice (3 cups, cooked) – Provides texture and bulk; quinoa can be a low-carb substitute.
Frozen Chopped Spinach (2 packages, 10 ounces each, thawed) – Adds nutrients and color; fresh spinach can also be used.
Fresh Lemon Juice (2 tablespoons) – Brightens flavor; vinegar can substitute in a pinch.
Lemon Zest (1 teaspoon) – Enhances lemon flavor; use bottled lemon juice as an alternative.
Part-Skim Mozzarella Cheese (8 ounces, shredded) – Melts beautifully for topping; switch for cheddar or Monterey Jack for a different cheese flavor.
Parmesan Cheese (¼ cup, grated) – Adds a savory finish; nutritional yeast is a good vegan alternative.

Now that you have your ingredients ready, let’s get cooking and create a memorable meal with this creamy chicken and spinach casserole!

Step‑by‑Step Instructions for Creamy Chicken and Spinach Casserole

Step 1: Preparation
Begin by gathering all your ingredients for the Creamy Chicken and Spinach Casserole. This will ensure a smooth cooking process. Preheat your oven to 350°F (175°C) while you prepare your cooking area, and get your 9×13-inch baking dish ready by spraying it with cooking spray to prevent sticking.

Step 2: Sauté Aromatics
In a large nonstick skillet, melt 3 tablespoons of unsalted butter over medium heat. When the butter is bubbly, add 1 ½ cups of finely chopped yellow onion and 6 thinly sliced garlic cloves. Sauté these for about 4 minutes until the onions turn translucent, releasing their sweet aroma, and then stir in 2 teaspoons of dried Italian seasoning and ¼ teaspoon of crushed red pepper for added flavor.

Step 3: Make the Roux
Sprinkle 3 tablespoons of all-purpose flour into the onion mixture and stir for about 1 minute to form a roux. Gradually pour in 2 ½ cups of whole milk while continually whisking to avoid lumps. Continue stirring for about 3 minutes or until the sauce thickens and coats the back of a spoon, achieving a creamy consistency.

Step 4: Combine Sauce Ingredients
Lower the heat and mix in 4 ounces of chive and onion cream cheese until melted and well incorporated. Once smooth, fold in 4 cups of shredded rotisserie chicken, 3 cups of cooked long-grain white rice, and 2 packages (10 ounces each) of thawed frozen chopped spinach. Stir in 2 tablespoons of fresh lemon juice and 1 teaspoon of lemon zest to enhance the flavors.

Step 5: Transfer to Baking Dish
Carefully pour the creamy mixture into your prepared baking dish, spreading it evenly. This rich filling is a comforting base for your casserole. Top the mixture with 8 ounces of shredded part-skim mozzarella cheese and ¼ cup of grated Parmesan cheese, ensuring an even layer for a golden, bubbling finish.

Step 6: Bake the Casserole
Place the casserole in the preheated oven and bake for 15 minutes. Keep an eye on it until the cheese is fully melted and bubbly. The edges should begin to slightly brown, indicating that the casserole is warming through and ready for its final touch.

Step 7: Broil for Golden Finish
After baking, set your oven to broil on high. Broil the casserole for an additional 2-3 minutes, or until the cheese is golden brown and nicely bubbly. Monitor closely during this step to prevent burning, resulting in that beautiful, cheesy top everyone loves in a Creamy Chicken and Spinach Casserole.

What to Serve with Creamy Chicken and Spinach Casserole

There’s nothing quite like the homey aroma of a cheesy casserole coupled with tasty sides to create the perfect family meal.

Garden Salad: A fresh garden salad with tangy vinaigrette adds a bright contrast to the creamy casserole, balancing flavors beautifully.
Garlic Bread: Warm, buttery garlic bread provides a satisfying crunch, perfect for scooping up the rich, creamy goodness of the casserole.
Steamed Broccoli: Tender steamed broccoli brings a vibrant green pop and extra nutrients, complementing the hearty casserole without overwhelming it.
Roasted Carrots: Sweet, caramelized roasted carrots offer a lovely sweetness, creating a delightful harmony with the savory chicken and spinach filling.
Crispy Brussels Sprouts: Seasoned and roasted until crispy, Brussels sprouts add a delightful crunch and savory depth that contrasts with the casserole’s creaminess.
Highball Cocktail: A refreshing highball cocktail, with its crisp carbonation, cleanses the palate after each rich bite, making your dinner experience even more enjoyable.

Pair these dishes with your Creamy Chicken and Spinach Casserole for a feast that will leave everyone satisfied and asking for seconds!

Creamy Chicken and Spinach Casserole Variations

Feel free to get creative and make this dish your own with these simple swaps and additions!

Low-Carb Alternative: Replace long-grain white rice with cauliflower rice for a healthier, low-carb version that still satisfies. The texture holds up beautifully and adds a nice, nutty flavor.
Vegetarian Twist: Use chickpeas or cannellini beans instead of chicken, while keeping the creamy sauce intact. This variation introduces protein while catering to vegetarian diets.
Spicy Kick: Add a dash of hot sauce or increase the crushed red pepper to elevate the heat level. This twist will tantalize your taste buds and make it even more exciting.
Extra Veggies: Toss in additional vegetables like bell peppers, zucchini, or mushrooms for added nutrition and flavor. Sauté them with the onions for a wonderful aroma.
Cheese Swap: Switch out mozzarella for cheddar or gouda for a different flavor profile. Each cheese brings its personality, making every casserole unique!
Citrus Zest Boost: Incorporate lime or orange juice and zest in place of lemon for a refreshing citrus twist that brightens up the dish.
Savory Sausage: Substitute shredded chicken with cooked Italian sausage for a more savory profile. This heartier variation brings a delightful change of pace to your family dinner.
Herbs Galore: Enhance flavor with fresh herbs, like basil or parsley, mixed in before serving. The fresh touch adds vibrancy and color, making every bite feel special.

For more comforting chicken dinners, consider trying my delicious Garlic Parmesan Chicken or a delightful Chicken Mozzarella Pasta. Enjoy exploring the endless possibilities!

How to Store and Freeze Creamy Chicken and Spinach Casserole

Fridge: Store leftovers in an airtight container and refrigerate for up to 3 days to maintain freshness and flavor.

Freezer: For longer storage, freeze the casserole before baking. Wrap tightly in plastic wrap, then foil, and it can last up to 2 months.

Reheating: Thaw overnight in the fridge before reheating. Bake at 350°F (175°C) for about 20-25 minutes until heated through and bubbly.

Serving Suggestions: To enjoy it as a cozy meal, serve with a side salad or crusty bread; it’s sure to impress the whole family!

Make Ahead Options

These Creamy Chicken and Spinach Casserole is perfect for meal prep enthusiasts! You can prepare the filling up to 24 hours in advance by following the initial steps, like sautéing the vegetables and mixing in the sauce ingredients. Once combined, refrigerate it in an airtight container. For a seamless dinner, when you’re ready to cook, simply pour the mixture into your greased baking dish, top it with cheese, and heat in the oven for about 15 minutes. If you need to make it even earlier, you can freeze the assembled casserole for up to 2 months. Just make sure to thaw it overnight in the fridge before baking and indulge in a delicious homemade meal that’s just as delightful!

Expert Tips for Creamy Chicken and Spinach Casserole

Moisture Control: Squeeze excess moisture from your thawed spinach to avoid a watery casserole. This tip is crucial for achieving the perfect creamy texture.
Fresh Rice: Using freshly cooked rice will lead to a better casserole consistency. Leftover rice tends to become mushy when baked.
Cheese Variations: Don’t hesitate to mix up your cheeses! Swap mozzarella for cheddar or Monterey Jack for a flavor twist in your Creamy Chicken and Spinach Casserole.
Broiling Care: Stay close while broiling to prevent burning. A minute or two can make a big difference between golden perfection and charred cheese!
Ingredient Swaps: Feel free to swap chicken for cooked sausage or turkey for variations. This handy trick keeps your family guessing and satisfied!

Creamy Chicken and Spinach Casserole Recipe FAQs

How do I choose the right spinach for the casserole?
Absolutely! If you’re using fresh spinach, look for vibrant, bright green leaves without any dark spots or wilting. If using frozen spinach, ensure it’s deeply colored and that there are no ice crystals in the packaging, which can indicate freezer burn.

How should I store leftover Creamy Chicken and Spinach Casserole?
You can store leftovers in an airtight container in the fridge for up to 3 days. Be sure to let the casserole cool down at room temperature before sealing it. This helps maintain flavor and freshness.

Can I freeze this casserole for later?
Certainly! To freeze, prepare the casserole but don’t bake it. Wrap the dish tightly in plastic wrap, then in aluminum foil; it’ll keep best for up to 2 months. When you’re ready to enjoy it, allow it to thaw overnight in the fridge, then bake at 350°F (175°C) for about 20-25 minutes.

What should I do if my casserole turns out too watery?
Very! If your casserole ends up with excess moisture, it’s often due to watery spinach. To remedy this, after thawing frozen spinach, make sure to squeeze out as much moisture as possible before adding it to the mix. This ensures that your casserole has that perfect creamy consistency!

Can I make this dish dairy-free or gluten-free?
Definitely! For a dairy-free version, substitute the milk with unsweetened almond milk and use a dairy-free cream cheese variant. For gluten-free, replace all-purpose flour with cornstarch mixed with cold water or a gluten-free flour blend.

Is this casserole safe for my pets?
Generally, this casserole contains ingredients like garlic and onion, which can be toxic to pets. It’s best to keep this dish reserved for humans, ensuring that your furry friends stick to their pet-safe meals.