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Dinner / Chicken Spinach Casserole: Delicious Recipe & Easy Instructions

Chicken Spinach Casserole: Delicious Recipe & Easy Instructions

June 1, 2025 by HaileyDinner

Chicken Spinach Casserole: Just the name conjures up images of cozy nights, comforting aromas, and a dish that’s both satisfying and surprisingly healthy. Have you ever craved a meal that feels like a warm hug? This is it! Forget complicated recipes and hours spent in the kitchen; this casserole is all about ease and deliciousness.

While the exact origins of the Chicken Spinach Casserole are a bit murky, casseroles themselves have a long and storied history, evolving from simple peasant dishes designed to stretch ingredients into hearty meals. They’ve become a staple in American cuisine, particularly known for their adaptability and ability to feed a crowd. This particular combination of chicken and spinach likely gained popularity as families sought ways to incorporate more vegetables into their diets without sacrificing flavor.

What makes this dish so beloved? It’s the perfect marriage of creamy, savory, and slightly earthy flavors. The tender chicken and vibrant spinach are enveloped in a rich, cheesy sauce, creating a symphony of textures and tastes that will tantalize your taste buds. Plus, it’s incredibly convenient! You can easily prepare it ahead of time, making it ideal for busy weeknights or potlucks. Get ready to experience the ultimate comfort food with this easy and delicious recipe!

Chicken spinach casserole this Recipe

Ingredients:

  • For the Chicken:
    • 2 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
    • 1 tbsp olive oil
    • 1 tsp garlic powder
    • 1 tsp onion powder
    • 1/2 tsp paprika
    • 1/4 tsp salt
    • 1/4 tsp black pepper
  • For the Spinach Mixture:
    • 1 tbsp butter
    • 1 medium yellow onion, chopped
    • 2 cloves garlic, minced
    • 10 oz frozen spinach, thawed and squeezed dry
    • 8 oz cream cheese, softened
    • 1/2 cup sour cream
    • 1/4 cup grated Parmesan cheese
    • 1/4 tsp salt
    • 1/4 tsp black pepper
    • Pinch of nutmeg (optional)
  • For the Sauce:
    • 2 tbsp butter
    • 2 tbsp all-purpose flour
    • 2 cups milk
    • 1/2 cup chicken broth
    • 1/4 tsp salt
    • 1/4 tsp black pepper
    • 1/4 cup grated Parmesan cheese
  • For the Topping:
    • 1 cup shredded mozzarella cheese
    • 1/2 cup panko breadcrumbs
    • 2 tbsp melted butter

Preparing the Chicken:

  1. First, let’s get the chicken ready. In a large bowl, toss the cubed chicken with olive oil, garlic powder, onion powder, paprika, salt, and pepper. Make sure the chicken is evenly coated with the spices. This step is crucial for flavorful chicken in every bite!
  2. Heat a large skillet over medium-high heat. Add the seasoned chicken and cook until it’s cooked through and lightly browned, about 5-7 minutes. Be careful not to overcrowd the pan; you may need to cook the chicken in batches to ensure even cooking. Overcrowding can lead to steaming instead of browning. Once cooked, remove the chicken from the skillet and set aside.

Making the Spinach Mixture:

  1. Now, let’s move on to the spinach mixture. In the same skillet (no need to clean it!), melt the butter over medium heat. Add the chopped onion and cook until softened and translucent, about 5 minutes. This step builds a flavorful base for the spinach.
  2. Add the minced garlic to the skillet and cook for another minute until fragrant. Be careful not to burn the garlic, as it can become bitter.
  3. Add the thawed and squeezed-dry spinach to the skillet. It’s really important to squeeze out as much excess water as possible from the spinach. This prevents the casserole from becoming watery. Cook for a few minutes, stirring occasionally, until the spinach is heated through.
  4. Reduce the heat to low. Add the softened cream cheese, sour cream, and Parmesan cheese to the skillet. Stir until everything is well combined and the cream cheese is melted and smooth.
  5. Season the spinach mixture with salt, pepper, and a pinch of nutmeg (if using). Taste and adjust the seasonings as needed. This is your chance to make sure the spinach mixture is perfectly seasoned to your liking.
  6. Remove the spinach mixture from the heat and set aside.

Preparing the Cream Sauce:

  1. Time to make the creamy sauce! In a medium saucepan, melt the butter over medium heat.
  2. Whisk in the flour and cook for 1-2 minutes, stirring constantly, to create a roux. This step is essential for thickening the sauce. Make sure there are no lumps.
  3. Gradually whisk in the milk and chicken broth, stirring constantly to prevent lumps from forming. Continue whisking until the sauce is smooth.
  4. Bring the sauce to a simmer, stirring occasionally, and cook until it has thickened slightly, about 5-7 minutes. The sauce should be thick enough to coat the back of a spoon.
  5. Remove the saucepan from the heat and stir in the salt, pepper, and Parmesan cheese. Taste and adjust the seasonings as needed.

Assembling the Casserole:

  1. Preheat your oven to 350°F (175°C).
  2. Lightly grease a 9×13 inch baking dish.
  3. Spread the spinach mixture evenly over the bottom of the baking dish.
  4. Arrange the cooked chicken cubes over the spinach mixture. Make sure the chicken is evenly distributed.
  5. Pour the cream sauce evenly over the chicken.

Making the Topping and Baking:

  1. In a small bowl, combine the shredded mozzarella cheese and panko breadcrumbs.
  2. Drizzle the melted butter over the cheese and breadcrumb mixture and toss to combine. This will help the topping get nice and golden brown.
  3. Sprinkle the cheese and breadcrumb mixture evenly over the cream sauce.
  4. Bake in the preheated oven for 20-25 minutes, or until the topping is golden brown and bubbly and the casserole is heated through.
  5. Let the casserole cool for a few minutes before serving. This allows the sauce to set slightly and prevents burning your mouth.

Tips for Success:

  • Don’t skip squeezing the spinach! This is super important to prevent a watery casserole.
  • Use softened cream cheese. This will make it much easier to incorporate into the spinach mixture.
  • Adjust seasonings to your taste. Feel free to add more or less salt, pepper, or other spices to suit your preferences.
  • For a richer flavor, use heavy cream instead of milk in the sauce.
  • Add other vegetables. Sautéed mushrooms, bell peppers, or broccoli would be delicious additions to this casserole.
  • Make it ahead of time. You can assemble the casserole ahead of time and store it in the refrigerator for up to 24 hours. Add a few extra minutes to the baking time if baking from cold.
  • Freezing Instructions: Assemble the casserole in a freezer-safe dish. Cover tightly with plastic wrap and then aluminum foil. Freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed, adding about 10-15 minutes to the baking time.
Variations:
  • Add Bacon: Cooked and crumbled bacon adds a smoky flavor to the casserole. Sprinkle it over the chicken before adding the sauce.
  • Use Different Cheese: Try using Gruyere, Swiss, or cheddar cheese in place of or in addition to the mozzarella and Parmesan.
  • Make it Gluten-Free: Use gluten-free flour in the sauce and gluten-free breadcrumbs for the topping.
  • Spicy Kick: Add a pinch of red pepper flakes to the spinach mixture or sauce for a little heat.
  • Use Rotisserie Chicken: For a quicker meal, use shredded rotisserie chicken instead of cooking the chicken breasts.

Chicken spinach casserole

Conclusion:

This chicken spinach casserole isn’t just another weeknight dinner; it’s a comforting, flavorful, and surprisingly easy dish that’s destined to become a family favorite. From the creamy, cheesy sauce to the tender chicken and nutrient-packed spinach, every bite is a delightful experience. I truly believe this recipe is a must-try for anyone looking for a satisfying and wholesome meal that doesn’t require hours in the kitchen. What makes this casserole so special? It’s the perfect balance of flavors and textures. The richness of the cream cheese and cheddar cheese is beautifully offset by the earthy spinach and savory chicken. Plus, it’s incredibly versatile! Feel free to adapt it to your own preferences and dietary needs. Looking for serving suggestions? This casserole is fantastic on its own, but it also pairs wonderfully with a simple side salad, some crusty bread for soaking up all that delicious sauce, or even a side of roasted vegetables. For a lighter meal, try serving it over quinoa or brown rice. And speaking of variations, the possibilities are endless! Want to add a little kick? Stir in a pinch of red pepper flakes or a dash of hot sauce. Craving more veggies? Feel free to add mushrooms, bell peppers, or even some chopped broccoli. You could also swap out the cheddar cheese for Monterey Jack or Gruyere for a different flavor profile. If you’re short on time, you can even use pre-cooked rotisserie chicken to speed things up. For a gluten-free version, simply use gluten-free cream of mushroom soup and ensure your other ingredients are also gluten-free. I’ve made this chicken spinach casserole countless times, and it’s always a hit. It’s the kind of dish that everyone enjoys, from picky eaters to seasoned foodies. It’s also a great way to sneak in some extra vegetables for those who might be hesitant to eat them otherwise. The spinach practically melts into the sauce, making it almost undetectable for even the most discerning palates. But don’t just take my word for it! I encourage you to try this recipe for yourself. I’m confident that you’ll love it as much as I do. It’s a simple, satisfying, and incredibly delicious meal that’s perfect for any occasion. Whether you’re looking for a quick weeknight dinner or a comforting dish to share with friends and family, this casserole is sure to please. Once you’ve tried it, I’d love to hear about your experience! Did you make any modifications? What did you serve it with? What did your family think? Share your thoughts and photos in the comments below. I’m always eager to see how others are enjoying my recipes and to learn new ways to make them even better. So go ahead, give this chicken spinach casserole a try – you won’t be disappointed! I can’t wait to hear what you think! Happy cooking!

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Chicken Spinach Casserole: Delicious Recipe & Easy Instructions


  • Total Time: 70 minutes
  • Yield: 6–8 servings 1x
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Description

Creamy and comforting chicken and spinach casserole with a cheesy topping. Perfect for a weeknight dinner!


Ingredients

Scale
  • 2 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
  • 1 tbsp olive oil
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • 1/2 tsp paprika
  • 1/4 tsp salt
  • 1/4 tsp black pepper
  • 1 tbsp butter
  • 1 medium yellow onion, chopped
  • 2 cloves garlic, minced
  • 10 oz frozen spinach, thawed and squeezed dry
  • 8 oz cream cheese, softened
  • 1/2 cup sour cream
  • 1/4 cup grated Parmesan cheese
  • 1/4 tsp salt
  • 1/4 tsp black pepper
  • Pinch of nutmeg (optional)
  • 2 tbsp butter
  • 2 tbsp all-purpose flour
  • 2 cups milk
  • 1/2 cup chicken broth
  • 1/4 tsp salt
  • 1/4 tsp black pepper
  • 1/4 cup grated Parmesan cheese
  • 1 cup shredded mozzarella cheese
  • 1/2 cup panko breadcrumbs
  • 2 tbsp melted butter

Instructions

  1. Prepare the Chicken: In a large bowl, toss the cubed chicken with olive oil, garlic powder, onion powder, paprika, salt, and pepper.
  2. Heat a large skillet over medium-high heat. Add the seasoned chicken and cook until cooked through and lightly browned, about 5-7 minutes. Remove from skillet and set aside.
  3. Make the Spinach Mixture: In the same skillet, melt butter over medium heat. Add chopped onion and cook until softened, about 5 minutes.
  4. Add minced garlic and cook for another minute until fragrant.
  5. Add thawed and squeezed-dry spinach. Cook for a few minutes, stirring occasionally, until heated through.
  6. Reduce heat to low. Add softened cream cheese, sour cream, and Parmesan cheese. Stir until well combined and smooth.
  7. Season with salt, pepper, and nutmeg (if using). Taste and adjust seasonings. Remove from heat and set aside.
  8. Prepare the Cream Sauce: In a medium saucepan, melt butter over medium heat.
  9. Whisk in flour and cook for 1-2 minutes, stirring constantly.
  10. Gradually whisk in milk and chicken broth, stirring constantly to prevent lumps.
  11. Bring to a simmer, stirring occasionally, and cook until thickened slightly, about 5-7 minutes.
  12. Remove from heat and stir in salt, pepper, and Parmesan cheese. Taste and adjust seasonings.
  13. Assemble the Casserole: Preheat oven to 350°F (175°C).
  14. Lightly grease a 9×13 inch baking dish.
  15. Spread spinach mixture evenly over the bottom of the dish.
  16. Arrange cooked chicken cubes over the spinach mixture.
  17. Pour cream sauce evenly over the chicken.
  18. Make the Topping and Bake: In a small bowl, combine mozzarella cheese and panko breadcrumbs.
  19. Drizzle melted butter over the cheese and breadcrumb mixture and toss to combine.
  20. Sprinkle the cheese and breadcrumb mixture evenly over the cream sauce.
  21. Bake in the preheated oven for 20-25 minutes, or until the topping is golden brown and bubbly and the casserole is heated through.
  22. Let cool for a few minutes before serving.

Notes

  • Don’t skip squeezing the spinach! This is super important to prevent a watery casserole.
  • Use softened cream cheese. This will make it much easier to incorporate into the spinach mixture.
  • Adjust seasonings to your taste. Feel free to add more or less salt, pepper, or other spices to suit your preferences.
  • For a richer flavor, use heavy cream instead of milk in the sauce.
  • Add other vegetables. Sautéed mushrooms, bell peppers, or broccoli would be delicious additions to this casserole.
  • Make it ahead of time. You can assemble the casserole ahead of time and store it in the refrigerator for up to 24 hours. Add a few extra minutes to the baking time if baking from cold.
  • Freezing Instructions: Assemble the casserole in a freezer-safe dish. Cover tightly with plastic wrap and then aluminum foil. Freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed, adding about 10-15 minutes to the baking time.
  • Add Bacon: Cooked and crumbled bacon adds a smoky flavor to the casserole. Sprinkle it over the chicken before adding the sauce.
  • Use Different Cheese: Try using Gruyere, Swiss, or cheddar cheese in place of or in addition to the mozzarella and Parmesan.
  • Make it Gluten-Free: Use gluten-free flour in the sauce and gluten-free breadcrumbs for the topping.
  • Spicy Kick: Add a pinch of red pepper flakes to the spinach mixture or sauce for a little heat.
  • Use Rotisserie Chicken: For a quicker meal, use shredded rotisserie chicken instead of cooking the chicken breasts.
  • Prep Time: 25 minutes
  • Cook Time: 25 minutes

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