When it comes to easy, comforting dinners, creamy chicken casseroles are always high on the list.
And honestly, it’s not hard to see why—
tender chicken, rich cream cheese, and plenty of melted mozzarella
all baked together into one dish is the kind of meal everyone gathers around for.

This chicken and spinach casserole is one of those recipes that shows up again and again on busy weeknights.
It’s simple to put together, uses familiar ingredients,
and comes out of the oven hot, bubbly, and ready to serve.

Once you try it, you’ll understand why it quickly becomes a regular in the rotation.

For the Chicken & Spinach Casserole

Chicken Breasts – boneless and skinless; slicing them into thinner cutlets helps them cook evenly and stay tender.
Olive Oil – used for both marinating the chicken and sautéing the spinach, adding a light richness.
Garlic – brings a savory, aromatic base that flavors the entire dish.
Italian Seasoning – adds a blend of herbs that pairs perfectly with the creamy sauce.
Salt and Black Pepper – simple seasonings that enhance all the other flavors.
Fresh Spinach – cooks down quickly and adds a bit of freshness to balance the richness.

For the Creamy Topping

Cream Cheese – the base of the sauce, making everything rich, smooth, and creamy.
Mozzarella Cheese – melts beautifully and gives that classic gooey, cheesy finish.
Parmesan Cheese (optional) – adds a slightly salty, nutty flavor that deepens the overall taste.

Creamy Chicken & Spinach Bake with Cream Cheese

This comforting baked dish brings together juicy chicken, tender spinach, and a rich cream cheese base, all finished with a layer of melted mozzarella. It’s a simple yet satisfying option for weeknight dinners and works just as well for prepping meals ahead of time.

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Course: Main Course

Cuisine: American

Keyword: Creamy Chicken & Spinach Bake with Cream Cheese

Prep Time: 15

Cook Time: 30

Total Time: 45

Servings:

Notes

Ingredients

2 large boneless, skinless chicken breasts
2 tablespoons olive oil, divided
3 cloves garlic, minced
1 tablespoon Italian seasoning
¼ teaspoon salt
½ teaspoon black pepper
2 cups fresh spinach
8 ounces cream cheese, softened
1 cup shredded mozzarella cheese, divided
½ cup Parmesan cheese, optional

Instructions

Set your oven to 400°F (200°C). Lightly grease a 9×13-inch baking dish.
Slice each chicken breast horizontally to form four thinner pieces. If needed, gently pound the thicker parts so all pieces are even in thickness.
In a mixing bowl, combine 1 tablespoon of olive oil with the garlic, Italian seasoning, salt, and black pepper. Coat the chicken with this mixture, cover, and place in the refrigerator for 15–30 minutes.
Warm the remaining olive oil in a skillet over medium heat. Add the spinach and cook for 2–3 minutes, just until wilted. Remove from heat and set aside.
In a separate bowl, beat the softened cream cheese until smooth. Mix in the cooked spinach and ½ cup of the mozzarella cheese (and Parmesan if you choose to use it).
For extra flavor, you may briefly sear the marinated chicken in a hot skillet for 1–2 minutes on each side.
Place the chicken pieces in the prepared baking dish. Spread the cream cheese and spinach mixture evenly over the top, then sprinkle with the remaining mozzarella cheese.
Bake for 20–30 minutes, or until the chicken reaches an internal temperature of 165°F (75°C) and the cheese is melted with a light golden color.
Allow the dish to sit for 5 minutes before serving.

Notes

If using frozen spinach, thaw it completely and squeeze out any excess liquid before adding.
Store leftovers in a sealed container in the refrigerator for up to 3 days, or freeze for up to 2 months.
Chicken thighs can be used instead of breasts for a more tender result.

Save

Can I use frozen spinach?
Yes! Just make sure to thaw it completely and squeeze out all the excess moisture. This step is important so your casserole stays creamy and not watery.
Do I need to cook the chicken first?
No, you can bake the chicken raw in the casserole. Just be sure it reaches 165°F in the center. Cutting the chicken into thinner pieces helps it cook evenly.
Can I make this ahead of time?
Yes, this is a great make-ahead recipe. You can assemble everything, cover it, and refrigerate for up to 24 hours before baking.
Can I use chicken thighs instead of breasts?
Absolutely. Chicken thighs are a great option and tend to be juicier and more forgiving if slightly overcooked.
How do I keep the casserole from getting watery?
The key is removing excess moisture—especially from the spinach. Also, avoid overcrowding the dish so everything cooks evenly and the sauce stays thick and creamy.