Baked Cod Burgers

Preheat the oven to 350 degrees F (175 degrees C). Line a baking pan with parchment paper.

Combine cornmeal and flour with your fingers on a wide, shallow dish. Evenly coat each fillet in the flour mixture, then transfer to the prepared pan.

Bake in the preheated oven until fish becomes white and flakes easily with a fork, 15 to 25 minutes.

While the fish cooks, combine mayonnaise and relish to make tartar sauce. Divide sauce between the buns and spread on both halves. Place fillets on buns.