Cheesy Baked Fish

Details

Ingredients

• 3 tablespoons butter
• 1 onion, thinly sliced
• 1 pound skin-on fresh cod
• 1 tablespoon seasoned salt, or more to taste
• ½ cup mayonnaise
• 2 ½ tablespoons grated Parmesan cheese
• 2 ½ tablespoons shredded provolone cheese
• 2 ½ tablespoons shredded mozzarella cheese
• 1 tablespoon chopped fresh parsley