This baked catfish has a crispy cornmeal coating with a hint of spice from the Cajun seasoning, while the interior stays flaky and moist. Serve with tartar sauce, lemon wedges or your favorite hot sauce and with a green salad on the side.
Preheat oven to 450°F. Line a large rimmed baking sheet with foil and top with a wire rack. Coat the rack with cooking spray.
Stir cornmeal, flour and Cajun-Creole seasoning blend together in a large shallow dish. Whisk egg in a separate shallow dish.
Pat fillets dry with a paper towel and sprinkle evenly with salt. Working with 1 fillet at a time, dip in the egg to coat, letting excess egg drip back into the dish. Then dredge in the cornmeal mixture, turning to coat both sides. Transfer to the prepared rack on the baking sheet. Repeat with the remaining fillets. Coat the tops of the fillets with cooking spray.
Bake until crispy and golden, 15 to 20 minutes, turning the fillets over and coating with cooking spray halfway through. If desired, serve with tartar sauce and lemon wedges.