Ingredients

• cooking spray
• 2 pounds flounder fillets, rinsed and patted dry
• 1/4 teaspoon salt
• 1 tablespoon lemon juice
• 1/2 cup grated Parmesan cheese
• 1/4 cup butter, melted
• 3 tablespoons mayonnaise
• 3 tablespoons chopped green onion (optional)
• 2 tablespoons lemon juice

Instructions

1. Preheat oven to 375 degrees F (190 degrees C). Prepare a 13x9-inch baking dish with non-stick cooking spray.
2. Season both sides of flounder fillets with salt. Place into prepared baking dish. Brush 1 tablespoon lemon juice over fillets.
3. Mix Parmesan cheese, melted butter, mayonnaise, green onions, and 2 tablespoons lemon juice in a bowl; spoon over the fillets.
4. Bake flounder in preheated oven for 10 minutes. Switch oven to broil; broil fillets until the tops are just browned, 3 to 5 minutes.