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Parmesan broiled flounder on plate with pasta and spinach.
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5 from 43 votes

Parmesan Topped Broiled Flounder

A delicious broiled flounder recipe that lets the natural flavor of the mild fish shine through. the fish is first brushed with lemon juice then topped with a coat of parmesan, butter, mayo, and green onion.
Prep Time10 mins
Cook Time7 mins
Total Time17 mins
Course: Seafood dish
Cuisine: Italian-Amercian
Servings: 4 people
Calories: 389kcal
Author: Marisa Franca at All Our Way


  • 2 lbs. flounder fillets or 2 lbs. other white fish fillets
  • 2 Tbsp. fresh squeezed lemon juice
  • ½ cup parmesan cheese
  • ¼ cup butter. softened
  • 3 Tbsp. good quality mayonnaise such as Hellmann's
  • 3 green onions. chopped
  • ¼ tsp. sea salt
  • 1 dash hot sauce or more if desired


  • Place fish fillets in a single layer on aluminum foil lined shallow baking pan that's been sprayed with a vegetable cooking spray. You may also use a mild drizzle of olive oil or melted butter.
    You don't need to season fish. Just brush the fillets with the fresh lemon juice.
  • In a medium bowl, combine remaining ingredients to make the cheese mixture. Set aside
  • Broil fillets 4 to 6 minutes or until fish flakes easily when tested with a folk. (The time will depend on the thickness of your fillets and the temperature of the broiler.)
  • Remove fillets from oven and spread with the Parmesan mayo mixture.
  • Broil and additional 45 seconds to one minute or until cheese is lightly browned and bubbly. Be careful so that it doesn't burn.
  • Garnish the mild white fish with lemon slices and parsley, if desired.


  • Overcooking can produce a fillet that is mushy -- be sure to watch. This is a delicate and mild fish.
  • Place the baking pan on a baking sheet for easy transference to and from the oven. 
  • You may also add a teaspoon of fresh lemon zest to the cheese-mayo mixture for a more lemon taste. 


Serving: 4g | Calories: 389kcal | Carbohydrates: 1g | Protein: 33g | Fat: 27g | Saturated Fat: 11g | Cholesterol: 145mg | Sodium: 1170mg | Potassium: 399mg | Vitamin A: 615IU | Vitamin C: 4.5mg | Calcium: 206mg | Iron: 0.6mg