In a small bowl, combine the ricotta cheese, mozzarella cheese, parmesan cheese, marinara sauce, dried basil, garlic powder, salt, and black pepper. Mix well until thoroughly combined.
Place each chicken breast on a clean cutting board. Using a sharp knife, carefully cut a pocket into the side of each chicken breast, being careful not to cut all the way through.
Stuff each chicken breast pocket with the prepared cheese mixture. Press gently to close any openings.
Place the stuffed chicken breasts in a lightly greased baking dish.
Bake for 25-30 minutes, or until the chicken is cooked through and the cheese is melted and bubbly.
Let the chicken rest for a few minutes before serving.
Notes
Serve with your favorite pasta or a side salad for a complete meal.