How Long To Bake Flounder At 375 Degrees In Oven?

Whether you have flounder fillets stuck in your fridge and you don’t know what to do with it, or you’re simply up for a very fun and delicious fish night, you’ve come to the perfect place! Fish is such a great way to celebrate the best parts of life every day. Flounders are great for any occasion and every type of person! You just can’t go wrong with this unbelievably delicious and mouth-watering protein. The flounder cook time and temp are key for getting a good result. One popular question about cooking flounder is this. How long to bake flounder at 375 degrees in the oven? Let’s talk about this in this guide and also other tips to perfect the recipe for oven baked flounder fillet.

How Long To Bake Flounder At 375 Degrees In Oven?

To fully cook flounder in an oven at 375 degrees, it would normally take around 20-25 minutes. This cook time does vary whether you are cooking flounder fillet or the whole flounder as well as the size or thickness of the fish. Nevertheless, 20-25 minutes would be a good estimate! However, of course, it’s best to check on your flounder fish by testing with a fork. If your fish’s meat flakes off easily when twisted with a fork, then your fish is perfectly done! Make sure that the internal temperature of the flounder also reaches 145 degrees, to ensure safe and healthy eating!

What are other temp to cook flounder fillets in the 0ven?

Others find it better to lower the temperature a little to 350 degrees, which would take 25-35 minutes of baking time to fully cook the flounder. You may also opt to raise the temperature to 425 degrees which would only take around 12-15 minutes for the flounder to be fully cooked. 425 degrees is actually the best temperature to cook your flounder, especially flounder fillets since it’s faster and it cooks the fish just right with a crisp and doesn’t dry it out.

How to cook flounder in the oven?

There are so many ways for you to cook and prepare your flounder! From baking to grilling, to even frying, flounders can do it all! I know, they’re amazing. One of my faves though would of course be classic baking and I like to use flounder fillets for this one. You can easily find many recipes for baked flounder fillets. But I have one easy flounder fillet recipe which I always use. Here’s how to cook flounder fillet in the oven.

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1. Prepare seasoning for flounder

To bake flounders, there’s not much to it. You just have to season your flounder with salt, pepper, cayenne, onion, garlic, rosemary, and parsley, then squeeze some lemon juice and pour some melted butter.

2. Arrange

Place a aluminum foil over a baking sheet to prevent the fish from sticking. Then place the fish on the foil.

3. Bake

Then, you just let it bake in the oven for 12 minutes at 425 degrees. The next thing you know, you’re sitting at dinner and having one of the best fish dishes in your life.

What is another good way to cook flounder?

You can also try to fry your flounder. Simply season your fish with the basic seasoning, then coat it with seasoned flour, beaten egg, and bread crumbs – yes, in that order. Then, simply cook it in butter and olive oil, for around 6 minutes on each side or until golden brown! This is also a simple way of cooking your flounder that will always be fool-proof!

How to bake flounder in oven fast?

Just thinking about fish night, and having flounder for dinner, already makes my tummy grumble and my mouth water. I’m sure among your guests, there’s someone like me who just can never wait for food to be served! So, in times you need to serve your flounders quicker, here’s what you can do!

Give Time to Thaw

Sometimes, waiting for the ice to melt is what takes time, So, make sure to remove your fish from the fridge, at least a few hours before you start baking them so they can thaw properly and fully! A properly defrosted flounder will cook faster and more evenly in the oven.

Marinate Flounder Ahead

This one depends on the flounder recipe you’re going to follow since some recipes call for marinade time for the flounder while others don’t. If you insist on following a recipe that needs marinade time, marinating your flounder a day before you cook it will save time on the actual day you’re cooking!

Choose Thin Cuts

Your type of flounder would also affect its cooking time! Of course, fillets would cook faster than if you’re cooking the whole fish, and definitely, thinner fillets cook faster than thicker ones!

What to serve with flounder?

No dish is ever complete without its sides. Some of the best sides that goes well with flounder are of course veggies. Greens like asparagus and broccoli are my personal favorites.

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Tips to level up your flounder fillet recipe

Yum! I’m telling you, flounder will always be the right choice! I’m sure all your guests, friends, and family will now always crave flounder after you serve them your very scrumptious dish! Hmm…why not take it up a notch even more? There’s nothing better than putting a bigger wow on your guests’ faces! So, here are ways you can level up your dish!

  1. Add Something New – Though baking your fish in the bare minimum is already good in itself, it’s always better to make it better. You can do this by adding something new like coating your fillets with garlic parmesan crumbs or anything that comes from your cooking creativity!
  2. Travel Around the World – Different parts of the world enjoy this very scrumptious fish differently. While others may consider it “exotic”, if you’re adventurous like me, taking inspiration from different dishes of different countries in cooking your flounder can be the perfecting factor of your dish!


Yess! Now I want to have flounder fillets for dinner, too. Flounder is just never a wrong choice. And, that’s all you need to know about cooking your flounder to absolute perfection! I’m sure your guests’ tummies will exclaim in joy because they’ve eaten something so heavenly! Enjoy your fish night!

FAQs on Oven Baked Flounder

How Long To Bake Flounder At 400 Degrees?

It takes 15 to 18 minutes to bake flounder at 400 degrees Fahrenheit in the oven. The result is a flounder fillet with tender meat and crispy skin.

What is the internal temperature of flounder when done?

The internal temperature of flounder is to reach 145 degrees Fahrenheit for a fully cooked fish. This temperature should be taken at the thickest part of the fillet as the thicker part will take longer to cook.

How Long To Bake Flounder At 350 Degrees In Oven?

It will take 25 to 28 minutes to bake a flounder at 350 degrees in the oven for the fish to reach an internal temperature of 145 degrees to be fully cooked. At this temperature, the fish have tender flesh with moist skin without any crisp.