Introduction

This Chicken Spinach Casserole is a creamy, cheesy dish that’s both comforting and easy to prepare. With tender chicken cutlets layered under a rich spinach and cream cheese mixture, it’s perfect for a satisfying weeknight dinner.

A close-up of two square pieces of lasagna on a white plate resting on a white marbled surface. The lasagna has four layers: a base layer of golden-brown pasta, a thick creamy white ricotta and spinach mixture as the second layer, pieces of white chicken and spinach mixed with melted golden-brown cheese as the third layer, and a top layer of browned melted cheese with green herb sprinkles. The lasagna edges show a slightly crispy texture, and a silver fork is lifting one piece from the plate. photo taken with an iphone --ar 4:5 --v 7

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

Step 1: Preheat your oven to 400°F (200°C) and lightly grease a 9×13-inch baking dish.
Step 2: Cut each chicken breast in half horizontally to create four thin cutlets. Pound the thicker ends to ensure even thickness.
Step 3: In a bowl, whisk together 1 tablespoon olive oil, minced garlic, Italian seasoning, salt, and black pepper. Toss the chicken in this marinade, cover, and refrigerate for 15-30 minutes.
Step 4: Heat the remaining tablespoon of olive oil in a skillet over medium heat. Add the spinach and cook for 2-3 minutes until wilted, then set aside.
Step 5: In a bowl, beat the softened cream cheese until smooth. Stir in the cooked spinach and ½ cup of the mozzarella cheese, along with Parmesan if using.
Step 6: For extra flavor, sear the marinated chicken cutlets in a hot skillet for 1-2 minutes per side until lightly browned (optional).
Step 7: Arrange the chicken cutlets in the prepared baking dish. Spread the cream cheese and spinach mixture evenly over the chicken, then sprinkle the remaining mozzarella on top.
Step 8: Bake in the preheated oven for 20-30 minutes, or until the chicken reaches an internal temperature of 165°F (75°C) and the cheese is melted and lightly browned.
Step 9: Let the casserole rest for 5 minutes before serving to allow flavors to meld.

Tips & Variations

Use fresh mozzarella for a creamier topping or add a pinch of red pepper flakes for a hint of heat.
Swap fresh spinach with frozen chopped spinach—just be sure to thaw and squeeze out excess moisture first.
Adding sliced mushrooms or sun-dried tomatoes can boost flavor and texture.
If you prefer a crispier crust, broil the casserole for 2-3 minutes at the end of baking, watching carefully to prevent burning.

Storage

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the oven at 350°F (175°C) or in the microwave until warmed through. Avoid overheating to keep the chicken tender and the cheese from drying out.

How to Serve

The image shows a close-up of a slice of white lasagna on a white plate with a white marbled texture background. The dish has four visible layers: the bottom layer is pale pasta, the second layer is creamy white ricotta cheese mixed with chunks of cooked chicken and dark green spinach leaves, the third layer is another pale pasta sheet, and the top layer is golden-brown melted cheese with small browned spots and sprinkled green herbs. The edges of the lasagna slice have a slightly crispy look, and part of the slice is lifted slightly with a fork showing the soft texture inside. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen chicken breasts for this casserole?

Yes, but be sure to fully thaw and pat them dry before preparing. This helps achieve even cooking and proper browning.

Is it possible to make this casserole dairy-free?

To make this dairy-free, substitute cream cheese and cheeses with your favorite plant-based alternatives, such as vegan cream cheese and dairy-free shredded cheese.