1In a medium bowl, place catfish fillets in buttermilk. Cover, and marinate in the refrigerator 45 minutes.
2In a resealable plastic bag, mix cornmeal, onion salt, and steak seasoning. One at a time, drain catfish fillets and place in the bag to coat with the cornmeal mixture.
3Heat oil in a large, heavy skillet over medium heat. Fry each fillet 7-10 minutes per side, or until exterior is lightly browned and flesh is easily flaked with a fork. Drain on paper towels.
Footnotes
Note
The nutrition data for this recipe includes information for the full amount of the marinade ingredients. Depending on marinating time, ingredients, cooking method, etc., the actual amount of the marinade consumed will vary.