Warm your oven to a cozy 375°F (190°C) and lightly oil a 9×13 baking dish.

Nestle the chicken breasts in the prepared dish.

Stir together sour cream, half of the Parmesan, salt, pepper, oregano, garlic, and cornstarch in a mixing bowl until perfectly blended.

Place a slice of mozzarella atop each chicken piece.

Lavish the sour cream blend over the chicken, then sprinkle the remaining Parmesan for a cheesy finish.

Let it bake for an hour, until the chicken is thoroughly cooked and the cheese topping is golden and inviting.

Once done, allow it to sit momentarily before serving it up hot.

Consider adding a sprinkle of fresh parsley to garnish this delightful dish. With the recipe at your fingertips, embark on creating this sensational dish that marries the tenderness of chicken with the smooth, rich flavors of cheese and sour cream. It’s a dish that’s bound to become a cherished addition to your dining table, beloved by friends and family alike.