01 -
Preheat the oven to 190°C (375°F). Spray a baking dish with non-stick cooking spray.
02 -
In a small bowl, combine mayonnaise or Greek yogurt, Parmesan cheese, minced onion, garlic powder, dried parsley, salt, and pepper until well incorporated.
03 -
Slice chicken breasts in half horizontally if they are too thick. Place them in the prepared baking dish.
04 -
Spoon the sauce mixture evenly over each chicken breast, ensuring they are completely covered.
05 -
Bake for 35-45 minutes, or until chicken is cooked through (internal temperature of 74°C/165°F) and the top is golden brown.