- 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
- Preheat oven to 375 degrees F (190 degrees C). Prepare a 13×9-inch baking dish with non-stick cooking spray.
- Season both sides of flounder fillets with salt. Place into prepared baking dish. Brush 1 tablespoon lemon juice over fillets.
- Mix Parmesan cheese, melted butter, mayonnaise, green onions, and 2 tablespoons lemon juice in a bowl; spoon over the fillets.
- Bake flounder in preheated oven for 10 minutes. Switch oven to broil; broil fillets until the tops are just browned, 3 to 5 minutes.