Directions
Get Ready to Bake: Preheat your oven to 375°F / 190°C. Lightly grease a 9x13-inch / 23x33 cm baking dish to prevent sticking.
Mix the Spice Rub: In a small bowl, whisk together the paprika, onion powder, and garlic powder until combined.
Season the Chicken: Pat the chicken breasts completely dry with a paper towel for a better crust.
Place them on a cutting board, drizzle with olive oil, and season generously on all sides with salt, pepper, and your prepared spice rub.
Create the Pocket: Using a sharp knife, carefully slice a deep pocket into the thickest side of each chicken breast. Be careful not to cut all the way through to the other side.
Whip Up the Filling: In a medium bowl, combine the softened cream cheese, grated Parmesan, mayonnaise, chopped spinach, minced garlic, red pepper flakes, and salt.
Stir until the mixture is smooth, creamy, and well-combined.
Stuff the Chicken: Divide the spinach filling evenly among the four chicken breasts, carefully spooning it into each pocket. If they are very full, you can use toothpicks to secure the opening and keep the delicious filling inside.
Bake to Perfection: Arrange the stuffed chicken breasts in your prepared baking dish.
Bake for 25-30 minutes, or until the chicken is cooked through and the filling is bubbly. The most reliable way to check for doneness is with a meat thermometer; the internal temperature should read 165°F / 74°C.
Rest and Serve: Remove the chicken from the oven and let it rest for at least 5 minutes before serving. This crucial step allows the juices to redistribute, ensuring every bite is tender and moist.