Low Carb Fried Fish with Dijon Mustard Sauce

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Published: 04/22/2019 | Updated: 04/02/2024

I made this fried tilapia recipe in my air fryer , but it could also be easily be baked in an oven or fried on the stove top! It’s an incredibly versatile recipe that you can tweak until you get your favorite blend of seasonings and cooking method. The dijon mustard sauce has a  mild mustard taste that brings the whole dish together

parmesan crusted fried fish with a creamy dijon mustard sauce on a white platter with a sprinkle of chives

This was one of those recipes that surprised me with how much I ended up loving it! I originally was just trying to come up with a quick, low-carb fish recipe that I could make in my air fryer. I know most people find tilapia pretty bland, though, so I wanted an easy sauce to serve it with.

For some reason, the combination of milk fish with milk sauce makes for an amazing dish! It really lets the parmesan in the crust shine through, and it all just pairs so perfectly together!

Bonus points because it’s a great low-carb dinner option that’s perfect for people following the keto way of eating or just those who are trying to stay healthy!

How to Make Fried Fish in the Air Fryer

I was a little worried that the fish would cook too quickly in the air fryer and be chewy once I pulled it out. It was perfectly flaky, though, and just exactly how you want your fish to turn it out. Air frying fish was definitely a success!

I started with thawed tilapia fillets that were about 1/2″ thick. You may have to adjust how long you cook it based on how thick your fish fillets are, but it shouldn’t be too big of a difference. I did not test air frying frozen fish fillets, but if you do, leave me a note to let me know how it goes!

In a small rectangular container, add 1/4 cup of coconut flour, 1/4 cup of parmesan cheese, and 1/2 teaspoon of lemon pepper seasoning. Stir it together until it’s well blended.

glass dish with low carb breading and a tilapia filet in the middle

Using cooking spray, lightly spray both sides of your tilapia fillets to coat them. Then dip in parmesan mixture and flip to coat opposite side as well. You might have to use your fingers to really press the coating on.

Add to air fryer pan and cook for 10 minutes at 400 degrees. You know your fish is done when it flakes easily with a fork.

4 parmesan crusted fish fillets in an air fryer insert

I did stop my air fryer halfway through the cooking time to flip the fish over. If you want, you can do another quick spray of non-stick cooking spray at this point. It isn’t necessary but it helps it crisp up and gives it that golden color that is so appealing on fried food!

While your fish is in the air fryer, this is the perfect time to make your Dijon Mustard Sauce!

In a small saucepan , add 1/4 cup of sour cream, 1 tablespoon of heavy whipping cream, 1 tablespoon of dijon mustard, and 1/2 tablespoon of dried chives. Heat through, but do not allow it to come to a boil. It if starts boiling, the sour cream will separate and it won’t look as smooth and appetizing.

To serve, plate your fried fish and spoon the dijon mustard sauce over the top. You can sprinkle with additional chives if you want but that’s completely optional.

parmesan crusted fish fillets with creamy dijon mustard sauce and sprinkled with chives

Tips and Tricks to Making Fried Fish

  • If you aren’t concerned with keeping your dinner low carb, there are a couple of substitutions you can make. Use all-purpose flour instead of coconut flour. Use milk instead of heavy whipping cream.
  • You can also bake these in the oven if you don’t have an air fryer. Preheat your oven to broil and set the rack to the highest position. Broil the coated fish for about 4-6 minutes depending on the thickness of your fish. Turn over halfway through cooking. Fish is done when it flakes easily.
  • If you don’t have lemon pepper seasoning , you can just add salt and pepper to taste to the low-carb breading mix before you coat the fish.
  • The Dijon Mustard Sauce works really well with pork chops and chicken as well!

a bite of parmesan fried tilapia with creamy mustard sauce on a fork

Looking for more healthy recipes

Looking for healthier recipes? Check out these recipes that are both tasty and nutritious! From breakfast recipes to dinner recipes, these dishes will give you everything you need to start your day off right or to fuel your body for a busy night.

parmesan crusted fried fish with a creamy dijon mustard sauce on a white platter with a sprinkle of chives
Print Recipe
3.92 from 12 votes

Parmesan Crusted Fish Fillets with a Dijon Mustard Sauce

These parmesan crusted tilapia fillets are made in the air fryer, but can be broiled in the oven as well. Topped with a creamy dijon mustard sauce, they're a great low carb dinner recipe with a mild flavor!
Prep Time10 minutes
Cook Time10 minutes
Total Time20 minutes
Course: Main Course
Cuisine: American
Keyword: dijon mustard sauce, parmesan crusted fish fillet
Servings: 4
Calories: 210kcal
Author: Natalie Dixon


Fried Fish Fillets

  • 1 lb Fish Fillets thawed
  • 1/4 cup Coconut Flour
  • 1/4 cup Parmesan Cheese
  • 1/2 tsp. Lemon Pepper Seasoning

Dijon Mustard Sauce

  • 1/4 cup Sour Cream
  • 1 Tbsp. Heavy Whipping Cream
  • 1 Tbsp. Dijon Mustard
  • 1/2 Tbsp. Chives dried


  • In a small, rectangular container, add coconut flour, parmesan cheese and lemon pepper seasoning. Stir well to combine.
  • Spray both sides of fish with cooking spray. Then add to parmesan mixture and coat both sides. Use fingers to press parmesan mixture into fish if necessary.
  • Add to air fryer basket and cook at 400 degrees for 10 minutes or until the fish flakes easily. I stop the air fryer halfway through cooking time to flip the fish. 

Dijon Mustard Sauce

  • In small saucepan over medium heat, add sour cream, heavy whipping cream, dijon and chives. Stir to combine and heat through but do not let it boil.
  • Spoon mustard sauce over cooked fish and serve immediately.


If you do not have an air fryer, you can broil these in the oven for 4-6 minutes. Be sure to flip them halfway through. They are done when they flake easily with a fork.
If you are not concerned with keeping it low carb, use all-purpose flour in place of the coconut flour and milk in place of the heavy whipping cream.

In conclusion, this Low Carb Fried Fish with Dijon Mustard Sauce recipe is a healthy and delicious alternative to traditional fried fish. It is quick and easy to make and can be enjoyed by the whole family. This is the best dijon mustard fish recipe. It’s so easy to make and tastes amazing.


a white platter with parmesan crusted fried fish topped with a dijon mustard sauce and chopped chives

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