1.Pat The Catfish Dry, And Spread A Layer Of Mustard Over The Surface. Place The Cracked Pepper Onto A Plate, And Press The Coated Catfish Into The Pepper So It Is Well Covered. 2.Heat The Olive Oil And Butter In A Large Skillet Over Medium-High Heat. Fry The Catfish For 3 To 5 Minutes On Each Side, Or Until Fish Flakes With A Fork.