Baked Flounder Recipe With Lemon Garlic Butter (2024)

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Our Baked Flounder Recipe is an easy dinner that goes from prep to table in under 30 minutes. The fish is buttery, flaky, and full of fresh citrus and garlic flavors.

Who doesn’t love an easy meal that’s big on flavor? John and I are big fans of quick and easy dishes that use fresh herbs, citrus, and spices to add flavor without a lot of fuss.

Baked flounder with lemon garlic and butter is one of those meals. The flounder is baked in a lemon butter sauce filled with fresh garlic, onion powder, salt, and pepper.

Then the fish gets sprinkled with smoked paprika for an extra touch. Flounder is a light, white fish that flakes beautifully and pairs well with vegetables or salad for an easy dinner.

Much like our oven baked Mahi Mahi, Chilean Sea Bass, lemon pepper flounder and baked cod with Panko, this recipe comes together quickly and bakes up in no time! I love that it bakes in one pan, so cleanup is super easy.

Baked Flounder Recipe With Lemon Garlic Butter (1)

Lemon Garlic Flounder:

We love to add seafood recipes to our weekly rotation of easy dinner dishes. They’re light, simple to prepare, full of flavor, and the possibilities are endless.

This easy flounder recipes checks off all those boxes. It comes together and is on the table in about 30 minutes.

We chose to season the flounder with a savory lemon garlic butter and a sprinkle of smoked paprika. The light flavors pair well with flaky white fish without being heavy or overwhelming.

Serve this flounder recipe with your favorite sides for an amazing dinner recipe that the whole family will love!

How to Make Baked Flounder with Lemon Garlic and Butter:

  1. Start by preheating the oven, and buttering a 9 x 13-inch baking dish. Set aside. Since the fish is usually on the thinner side and it’s delicate, we bake it on a lower temperature of 325°F.
  2. In a small bowl, whisk together the melted butter, lemon juice, garlic, onion powder, salt, and pepper. Please use freshly squeezed lemon juice and not imitation.
  3. Pat the fish fillets dry with a paper towel, and check for any small bones. Lay the fillets in the prepared baking dish. It’s okay to overlap the fish if it doesn’t fit in an even layer as long as all the fillets are in an even layer.
Baked Flounder Recipe With Lemon Garlic Butter (2)
Baked Flounder Recipe With Lemon Garlic Butter (3)
  1. Pour the lemon butter mixture over the fish. Sprinkle the flounder with smoked paprika, and bake for 15 to 20 minutes or until the fillets flake easily with a fork. Depending on the thickness of the fish, it may need to bake it for a couple extra minutes.
  2. Serve the baked flounder immediately with a drizzle of the lemon butter and garlic, extra lemon wedges, fresh vegetables, or a side salad.
Baked Flounder Recipe With Lemon Garlic Butter (4)
Baked Flounder Recipe With Lemon Garlic Butter (5)

What goes with baked flounder?

Baked flounder goes great with lighter side dishes. Here are some favorites:

  • Roasted Potatoes
  • Mashed Sweet Potatoes

The side dishes for flounder are endless with plenty of flavorful options.

How do you bake fish without drying it out?

Make sure to cook the fish at the correct time and temperature for the variety that you’re baking. Although, most fish varieties cook at similar oven temperatures, they can vary slightly. The thickness and texture of the fish is also important. Less oily fish tend to dry out more easily than fattier fish like salmon or sea bass.

How do you know when flounder is cooked?

Baked flounder will be white and flake easily with a fork when it’s finished baking. Additionally, the internal temperature should range between 140°F to 145°F on an instant read thermometer.

Can you use frozen fillets for baked flounder with lemon garlic and butter?

We used frozen fillets that had been thawed and patted dry, and don’t recommend using completely frozen fillets. Fresh fillets are the best bet if you’re able to locate them.

Why is the flounder so watery?

If you used frozen flounder fillets, it is likely due to the solution in fish. Another possibility is if the fish wasn’t properly thawed, it will release water as it cooks.

Either one of these can cause the finished dish to have a watery or soupy consistency and will dilute the flavor of the butter sauce.

Do you have to use a lemon garlic and butter sauce?

No, there are a ton of ways to flavor flounder.

You can also use olive oil, salt, and pepper with some fresh lemon juice at the end. Anything that’s light and flavorful will work well without overpowering the fish.

If you want a spicy fish recipe, try our blackening seasoning and make oven baked blackened flounder.

How to Store Leftover Flounder:

Flounder stores well in an airtight container in the refrigerator for 1 to 2 days. Reheat in the oven on the lowest temperature setting just until warmed through. This helps to prevent drying out.

Another option is to reheat over low heat on the stove top.

Other Seafood Recipes to Add to the Menu

  • Shrimp Curry
  • Mushroom Shrimp Pasta
  • Shrimp Scampi
  • Blackened Mahi Mahi
  • Sheet Pan Salmon

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Baked Flounder Recipe With Lemon Garlic Butter (8)

Baked Flounder

4.5 from 168 votes

Print Pin

Author: Kim

Prep Time: 10 minutes minutes

Cook Time: 20 minutes minutes

Total Time: 30 minutes minutes

Servings: 4 Servings

Ingredients

  • 4 tablespoons unsalted butter, melted
  • 2 tablespoons lemon juice, freshly squeezed
  • 2 teaspoons garlic cloves, minced or pressed (about 3 small cloves)
  • ½ teaspoon kosher salt, or to taste
  • ¼ teaspoon ground black pepper
  • ¼ teaspoon onion powder
  • 1 pound flounder fillets, patted dry with paper towels
  • ½ teaspoon smoked paprika

Instructions

  • Preheat the oven to 325°F, and butter a 9 x 13-inch baking dish. Set aside.

  • In a small bowl, whisk together the melted butter, lemon juice, garlic, onion powder, salt, and pepper. Set aside.

    4 tablespoons unsalted butter

    2 tablespoons lemon juice

    2 teaspoons garlic cloves

    ½ teaspoon kosher salt

    ¼ teaspoon ground black pepper

    ¼ teaspoon onion powder

  • Pat the fillets dry with a paper towel, then place them in the prepared baking dish. Pour the butter mixture over the fillets. Sprinkle smoked paprika over the top.

    1 pound flounder fillets

    ½ teaspoon smoked paprika

  • Bake for 15 to 20 minutes (may need a few more minutes for thick fillets), or until the flounder flakes easily with a fork.

  • Remove from the oven, garnish with fresh parsley and lemon. Serve hot with a salad or steamed veggies.

  • Scroll up and see the post for tips, FAQs, and storage information.

Suggested Equipment

Notes

*The calories listed are an approximation based on the ingredients in the recipe card and a serving size of ¼ pound of flounder. Actual calories will vary.

*For more information, tips, and answers to frequently asked questions, please refer to the post.

Nutrition

Serving: 0.25poundCalories: 185kcalCarbohydrates: 1gProtein: 14gFat: 14gSaturated Fat: 8gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gTrans Fat: 0.5gCholesterol: 81mgSodium: 385mgPotassium: 207mgFiber: 0.2gSugar: 0.2gVitamin A: 512IUVitamin C: 3mgCalcium: 32mgIron: 0.3mg

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Baked Flounder Recipe With Lemon Garlic Butter (2024)

FAQs

What is the safe cooking temperature for flounder? ›

But no matter the type of fish you decide to bake, its internal temperature should be 140 to 145 degrees F when cooked.

How do you cook flounder so it doesn't taste fishy? ›

Season with salt and pepper. Whisk butter and wine together in a bowl; pour over flounder. Sprinkle each fillet with bread crumbs and then paprika. Bake in the preheated oven until flounder flakes easily with a fork, 25 to 30 minutes.

Do you have to flip flounder? ›

You don't need to turn baked or broiled fillets at all. To check for doneness, slip a small knife under the fish and gently lift it. When fully cooked, the fillet will begin to flake and break open, changing in color from translucent to opaque.

Why is my baked flounder mushy? ›

It's overcooked.

Over-cooking is one of the leading reasons why fish turns out poorly. Using a meat thermometer can help. Remove fish from heat when it reaches an internal temperature of 140°F in the thickest part of the meat.

How do you cook flounder without it falling apart? ›

For fragile, flaky fish such as flounder, catfish, and cod, double coating it in flour, egg wash, and then breadcrumbs protects its delicate flesh from falling apart as it cooks, acting as a barrier between the fish and the pan to keep everything intact.

Is flounder a healthy fish? ›

Flounder is a healthy saltwater fish. It's a mild, white fish with a similar texture to tilapia and high in vitamin B12. Unlike tilapia, flounder has omega-3 fats. Next time you're making a recipe that calls for tilapia, try swapping in flounder instead.

What is the best temperature to cook fish? ›

When frying fish, the oil should be preheated to a temperature between 350°F to 375°F (175°C to 190°C) for optimal results. What temperature should fish be cooked to? To reiterate, the safe and ideal internal temperature for most fish according to the FDA is 145°F (63°C).

Should you rinse flounder fillets before cooking? ›

It is completely unnecessary to rinse any type of protein — fish included — unless you feel it's starting to smell off, in which case rinsing is sort of a last-ditch effort to get one more day out of it.

Why do you soak flounder in milk? ›

Before cooking, soak the fish in milk for 20 minutes

In this scenario, the protein in the milk binds with the compounds that cause that fishy odor, in essence extracting if from the fish.

Should I soak flounder in milk? ›

However, rather than having to cook a stinky piece of fish, there is actually a way to neutralize much of the unwanted smell. It may sound bizarre, but, according to Epicurious, an effective way to combat fishiness is by soaking the protein in milk prior to cooking.

Do you flip fish when baking? ›

The answer to the equation is the ideal baking time for the fish you are cooking. For example, if you are making fish fillets that are ½ inch thick, the ideal baking time will be 5 minutes. Since fish can fall apart easily, you should only flip it once, halfway through baking.

Why is my flounder falling apart? ›

You Didn't Cook Skin Side Down

When you pan cook fish, typically it cooks longer on one side than it does the other, and the idea is that the thick, fatty skin helps protect the fillet from drying out or flaking apart.

Which side of flounder is better? ›

The dark side is typically thicker and more moist, while the white side is thinner and milder. When the weather gets cold, in addition to procuring fish elsewhere, we at Lucky's like to feature flounder on our menu two to three times a week because it's from our coast and the flavor is at its peak.

Is flounder supposed to be fishy? ›

Flounder is a mild-tasting fish with slight sweetness and a delicate, flaky texture. It's a slightly fatty fish, but not fishy-tasting.

Can flounder be undercooked? ›

The flesh cooks quickly, and if you don't pay attention, your fish will be overcooked. Lean species like flounder fish are done when the flesh turns white and opaque, and flakes easily with a fork. Undercooked fish will still have some flesh that's somewhat clear and translucent.

Is flounder supposed to be soft? ›

Flounder is a thinner flat fish with both eyes on one side of the head. This fish, whole or in fillets, can be cooked by most cooking methods. It is a mild tasting white fish with a soft texture. Due to the soft texture one of my favorite ways of cooking it is by stuffing.

How do you prepare fresh flounder? ›

Cut the head off, making sure to leave as much of flesh as possible on the body, but cutting the gills and pectoral fins off with the head. Remove the guts through the forward opening. If you have problems getting everything out, cut a slit along the fish's length for better access. Rinse the fish, and pat dry.

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