Crispy Cod Sandwich

Preheat oven to 425 degrees F. Line a baking sheet with foil, place a wire rack on it and coat with cooking spray.

Whisk egg white in a shallow dish until frothy. Place cornflakes in another shallow dish. Sprinkle cod with garlic powder, pepper and salt. Dredge the cod in egg white, shaking off any excess, then coat with cornflakes, pressing to help them stick. Place on the prepared rack. Coat the top and sides of the fish with cooking spray.

Bake the fish until golden brown and an instant-read thermometer inserted in the thickest part registers 145 degrees F, 15 to 20 minutes.

Combine mayonnaise and relish in a small bowl. Serve the fish on buns with some of the sauce and vegetables.