1. Preheat the Oven:

   • Preheat your oven to 375°F (190°C).

2. Prepare the Spinach Filling:

   • In a medium bowl, combine the chopped spinach, feta cheese, cream cheese, minced garlic, oregano (if using), and a pinch of salt and pepper. Mix until well combined.

3. Prepare the Chicken:

   • Place the chicken breasts on a cutting board. Using a sharp knife, carefully create a pocket in each chicken breast by slicing horizontally, making sure not to cut all the way through.

4. Stuff the Chicken:

   • Spoon the spinach and feta mixture into each pocket, dividing it evenly among the chicken breasts. Secure the openings with toothpicks if necessary.

5. Season the Chicken:

   • Season the outside of the chicken breasts with salt, pepper, and a drizzle of olive oil.

6. Bake the Chicken:

   • Place the stuffed chicken breasts in a greased baking dish or on a lined baking sheet. Bake for 25-30 minutes, or until the chicken is cooked through (internal temperature should reach 165°F or 75°C) and the juices run clear.

7. Rest and Serve:

   • Remove the chicken from the oven and let it rest for about 5 minutes before slicing. This helps retain moisture.
   • Serve hot, garnished with additional feta or fresh herbs if desired.

Tips:

• Add Herbs: You can add fresh herbs like basil or parsley to the filling for extra flavor.
• Use Chicken Thighs: For a juicier option, you can use boneless, skinless chicken thighs instead of breasts.
• Serve with a Side: Pair the stuffed chicken with a side salad or roasted vegetables for a complete meal.