Preheat oven to 400°F. Set oven rack in middle of the oven.
In a shallow mixing bowl, combine the breadcrumbs and parm, and season with salt and pepper.
Place the cod on a wire rack set on top of a baking sheet. Slather the top side with 1 recipe Roasted Garlic Mayo and top with breadcrumb mixture.
Bake 15-20 minutes, or until cooked through and breadcrumbs are brown and crispy.