Creamy Chicken Spinach Casserole (Printable)
Tender chicken and fresh spinach baked in a rich, creamy three-cheese sauce for a comforting family meal.
# What You Need:
→ Protein
01 - 2 large boneless skinless chicken breasts, cooked and cubed (about 1.1 lb)
→ Vegetables
02 - 7 oz fresh spinach, roughly chopped
03 - 1 small yellow onion, finely chopped
04 - 2 cloves garlic, minced
→ Dairy and Sauce
05 - 1 cup heavy cream or half-and-half
06 - 1 cup shredded mozzarella cheese
07 - 1/2 cup grated Parmesan cheese
08 - 2 tablespoons cream cheese
09 - 1 tablespoon unsalted butter
10 - 1 tablespoon olive oil
→ Seasonings and Topping
11 - 1/2 teaspoon dried thyme
12 - 1/2 teaspoon ground black pepper
13 - 1/2 teaspoon salt, or to taste
14 - 1/2 cup gluten-free or regular breadcrumbs (optional, for topping)
# How-To Steps:
01 - Preheat the oven to 375°F. Lightly grease a medium baking dish with butter or cooking spray.
02 - In a large skillet, heat olive oil and butter over medium heat. Sauté the onion for 3 to 4 minutes until translucent. Add the minced garlic and cook for 1 minute until fragrant.
03 - Add the chopped spinach to the skillet and cook, tossing occasionally, until fully wilted, about 2 to 3 minutes.
04 - Reduce heat to low. Stir in the heavy cream, cream cheese, dried thyme, salt, and black pepper. Cook, stirring constantly, until the sauce is smooth and slightly thickened, about 3 minutes.
05 - Remove the skillet from heat. Fold in the cooked cubed chicken, half of the mozzarella, and half of the Parmesan. Mix until evenly incorporated.
06 - Transfer the mixture into the prepared baking dish, spreading it into an even layer. Sprinkle the remaining mozzarella and Parmesan over the top, followed by breadcrumbs if using.
07 - Bake uncovered for 20 to 25 minutes, or until the cheese topping is golden brown and bubbly.
08 - Remove from the oven and let the casserole rest for 5 minutes before serving hot.
# Expert Tips:
01 -
- It transforms basic pantry staples into a dinner that feels like you spent all day on it, even though the oven does most of the work.
- The creamy cheese sauce clings to every bite of chicken and spinach, making it impossible to stop at one serving.
- You can have it on the table in under an hour, and it reheats beautifully for lunch the next day.
02 -
- Squeezing excess moisture from the spinach before adding it prevents a watery casserole, which I learned after a very soupy first attempt.
- Do not skip the resting time because the casserole continues to set as it sits and will hold its shape much better.
03 -
- A tiny pinch of nutmeg in the cream sauce is a quiet secret that makes people wonder what makes it taste so special.
- Shred your own cheese instead of buying pre-shredded because the anti-caking agents on bagged cheese prevent it from melting smoothly.