Baked Flounder With Lemon

sole and lemon
Sole With Lemon. James And James/Photodisc/Getty
    35 mins
Ratings (18)

 This flavorful baked flounder is flavored with lemon and butter. This is a very simple recipe with great flavor. Serve it with the optional garlic aioli (below) or with a prepared tartar sauce or pesto. 

The recipe can be made with sole fillets or another mild white fish. Adjust the baking time if the fillets are quite thick.

Serve the fish with baked potatoes or rice and a salad or steamed vegetables.

What You'll Need

  • 1 1/2 pounds flounder or sole fillets
  • 1 teaspoon salt
  • 1/8 teaspoon freshly ground black pepper
  • 4 tablespoons melted butter
  • 2 tablespoons fresh lemon juice
  • 2 teaspoons finely minced onion
  • paprika
  • finely chopped fresh parsley for serving
  • lemon wedges for serving
  • Optional Garlic Aioli
  • 2 medium cloves garlic
  • salt, to taste
  • 1/2 cup mayonnaise
  • 2 tablespoons olive oil
  • 1 tablespoon fresh lemon juice

How to Make It

Butter a shallow baking dish. Heat the oven to 325 F (165 C/Gas 3). 

Cut the flounder fillets into serving-size portions and arrange the pieces in the prepared baking dish. Sprinkle the fish with 1 teaspoon of salt and the freshly ground black pepper.

In a small bowl or measuring cup, combine melted butter, 2 tablespoons of lemon juice, and minced onion; pour over fish. Sprinkle the fish with paprika.

Bake in the preheated oven for about 20 to 25 minutes, or until fish is cooked through and flakes easily with a fork.

Garnish with chopped parsley and lemon wedges and serve with garlic aioli (below), if desired.

Serve the baked flounder with hot cooked rice or baked potatoes, along with steamed vegetables or a salad.

Serves 4.

Garlic Aioli

Press the garlic into a small bowl and mash well with a fork. Add the mayonnaise, olive oil, and lemon juice, and whisk to blend thoroughly. Season with salt, to taste. Cover and chill until serving time.


Fish can quickly become tough and dry if overcooked. If the fillets are very thin, check for doneness after about 10 to 15 minutes.


Homemade Tartar Sauce - Combine 1/2 cup of mayonnaise with 1 tablespoon of white wine vinegar, 2 tablespoons finely chopped cornichons, 1 teaspoon of Dijon mustard or brown mustard, and salt and pepper, to taste. Optionally, add 1 to 2 teaspoons of chopped capers.

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