Directions. Prep. Cook. Ready In. 1  In a large skillet heat oil over medium heat. 2  Sprinkle seasoning salt on both sides of tomato slices, then dredge in the 1/2 cup of flour. 3  Place tomatoes in the hot oil and fry until golden brown, turning once.4  Keep tomatoes warm. Place tomatoes in the hot oil and fry until golden brown, turning once. 2  Keep tomatoes warm. 3  Add the 2 tablespoons of flour to the oil and cook over medium heat, stirring until smooth, about one minute.