Step 1

Preheat oven to 425°F. Line a baking sheet with foil or parchment paper for easy clean-up.

Step 2

In a small bowl, mix together mayonnaise and sour cream. In another small bowl, combine Parmesan, bread crumbs, garlic salt, and pepper.

Step 3

Lay chicken breasts on baking sheet. Season with garlic salt and pepper. Spread one-fourth of the mayonnaise/sour cream mixture on top and down sides of each chicken breast. Sprinkle one-fourth of the Parmesan/Panko mixture over the top of each chicken breast, covering the mayonnaise mixture and lightly pressing the crumbs into it.

Step 4

Bake for 20 minutes or until the chicken is cooked through and topping is golden brown , taking care not to overcook.