01 -
Preheat oven to 375°F. In a mixing bowl, combine ricotta cheese, 1/2 cup shredded mozzarella, 1/4 cup Parmesan, large egg, and chopped basil. Season with kosher salt and freshly ground black pepper.
02 -
With a sharp knife, carefully cut a pocket in each chicken breast without slicing all the way through. Stuff each with 2 tablespoons marinara sauce and one fourth of the ricotta mixture.
03 -
Set stuffed chicken breasts in a 9-inch by 13-inch baking dish. Lightly season with kosher salt and black pepper. Sprinkle with Italian seasoning and drizzle with extra-virgin olive oil.
04 -
Bake on the center rack until the chicken is nearly cooked through and reaches an internal temperature of 155°F, about 25 minutes. For thicker breasts, extend baking to 35 minutes. Carefully remove excess juices from the pan.
05 -
Set oven to broil. Top each chicken breast with remaining marinara sauce, 3/4 cup shredded mozzarella, and 2 tablespoons Parmesan cheese. Broil until cheese is golden and bubbling and internal temperature is 165°F, about 4 to 5 minutes.
06 -
Remove from oven and finish with additional chopped basil before serving.