Get the Oven Ready
Preheat your oven to 375°F. This moderate heat cooks the chicken evenly without drying it out.
Prep the Chicken
Place chicken breasts in a lightly greased baking dish in a single layer.
If any pieces are very thick, slice them horizontally. Even thickness matters more than you think.
Mix the Creamy Topping
In a bowl, stir together:
Mayonnaise
Parmesan cheese
Garlic powder
Seasoning salt
Black pepper
You want a thick, spreadable mixture—not runny, not stiff.
Coat Generously (But Not Excessively)
Spread the mixture evenly over each chicken breast.
Cover the top fully, but don’t pile it on. Too much can feel heavy.
Bake Until Just Done
Bake uncovered for 30–40 minutes, depending on thickness.
The internal temperature should hit 165°F at the thickest point.
Optional Golden Finish
If you like a lightly browned top, switch the oven to broil for 2–3 minutes at the end. Keep an eye on it—Parmesan browns fast.
Rest Briefly
Let the chicken rest for 5 minutes before serving. This keeps the juices where they belong.