Cheesy Baked Fish Recipe

  • 3 tablespoons butter
  • 1 onion, thinly sliced
  • 1 pound skin-on fresh cod
  • 1 tablespoon seasoned salt, or more to taste
  • 1/2 cup mayonnaise
  • 2 1/2 tablespoons grated Parmesan cheese
  • 2 1/2 tablespoons shredded provolone cheese
  • 2 1/2 tablespoons shredded mozzarella cheese
  • 1 tablespoon chopped fresh parsley
  1. Preheat oven to 400 degrees F (200 degrees C). Place butter in a 9×13-inch casserole dish.
  2. Place casserole dish in the preheating oven until butter is melted, about 5 minutes.
  3. Spread onion slices in the bottom of the casserole dish. Place cod skin-side down over onion. Sprinkle seasoned salt evenly on top.
  4. Mix mayonnaise, Parmesan cheese, provolone cheese, mozzarella cheese, and fresh parsley together in a bowl. Spread over cod.
  5. Bake in the preheated oven until cod flakes easily with a fork, 20 to 25 minutes.