Baked Mayo-Parmesan Fish is so easy for a low-carb fish dinner, and this just might become your favorite new recipe for cooking fish! And this parmesan-crusted fish with mayo is just so delicious!

PIN Baked Mayo Parmesan Fish to try it later!

Easy Low-Carb Baked Mayo-Parmesan Fish found on KalynsKitchen.com

I’m always excited when I’m sharing a new recipe and I know my readers are going to love it, and I’m 100% sure this Baked Mayo-Parmesan Fish is going to be a winner for lots of you. I can say that with confidence because a few years ago I posted Internet’s Best Baked Mayo-Parmesan Chicken, and for at least a year now fans of that recipe have been telling me about how they love that mayo-parmesan topping on fish! So I finally decided I should make it a separate recipe on its own so other people were more likely to to find it.

We swooned over it when we tested the recipe, and unless you’re someone who really doesn’t like fish, I bet you’re going to love it. And I’m going to recommend this recipe if you’re cooking for people who “don’t like fish” because the mayo-Parmesan topping adds so much amazing flavor. I hope you will try it and love it like we did!

What ingredients do you need for this recipe?

  • four fish fillets that are about a half-inch thick
  • Szeged Fish Rub (affiliate link)
  • mayo
  • freshly-grated or coarsely-grated Parmesan
  • Garlic Powder (affiliate link)
  • coarse ground black pepper to taste

What Fish Rub do I use?

One product I’ve recommended for years if you’re cooking any kind of fish is Szeged Fish Rub (affiliate link) a blend of spices that seems to me to be the perfect seasoning for fish. I found it at my grocery store for a quite a few years, but for at least 5 years now I’ve been buying it at Amazon.com, and I always have this in my spice drawer. If you have a brand of fish rub you like, I’m sure it will also work.

What kind of fish did I use for the Baked Mayo-Parmesan Fish?

I used frozen Mahi Mahi from Costco for the Baked Mayo-Parmesan Fish, but you can make this recipe with any thick pieces of white fish.

Want more recipes ideas for easy low-carb baked fish?

I have popular recipes on the site for Baked White Fish with Pine Nut, Parmesan, and Basil Pesto Crust and Baked Halibut with Sour Cream, Parmesan, and Dill topping, and both of those favorite fish recipes use a similar preparation method to the one in this recipe. And if you’re trying to eat more fish, check out The BEST Low-Carb Fish and Seafood Recipes from Kalyn’s Kitchen.

Easy Low-Carb Baked Mayo-Parmesan Fish found on KalynsKitchen.com

How to Make Baked Mayo-Parmesan Fish:

(See below for complete printable recipe with nutritional information.)

  1. Use any type of firm fish fillets that are about 1/2 inch thick. Thaw fish overnight in the fridge and drain well.
  2. Lay fish out on the cutting board, rub with Szeged Fish Rub (affiliate link) or your favorite brand, and let fish to come to room temperature while you preheat oven to 400F/200C.
  3. Combine the mayo, coarsely grated Parmesan, and garlic powder. 
  4. Use a rubber scraper to spread that mixture on the top of the fish. (It was much less messy to do that on the cutting board than when the fish was in the baking dish!)
  5. Carefully transfer fish to the baking dish. Season the top with a little fresh-ground black pepper to taste.
  6. Bake fish in the upper half of the oven for about 12 minutes, or until the fish is starting to get firm when you press on the side with a fork.
  7. Then turn your oven to BROIL and brown the topping for 3-4 minutes. (Watch it carefully!)
  8. There may be a little bit of liquid released as the fish cooks; just blot with a paper towel before you serve it if you feel the need.

Baked Mayo-Parmesan Fish shown in baking dish

Make it a Low-Carb Meal:

This would be great with something like Barely Steamed Asparagus with Basil Vinaigrette or Lemony Green Beans with Lemon Juice and Lemon Zest for a low-carb side dish.

More Low-Carb Dinners with Fish or Seafood:

Roasted Barramundi with Tomato and Olive Relish 

Baked White Fish with Onions, Peppers, Olives, and Feta 

Grilled Halibut with Basil Vinaigrette 

Easy Low-Carb Baked Mayo-Parmesan Fish found on KalynsKitchen.com
Yield: 4 servings

Easy Low-Carb Baked Mayo-Parmesan Fish

Prep Time 20 minutes
Cook Time 16 minutes
Total Time 36 minutes

This Easy Low-Carb Baked Mayo-Parmesan Fish just might become one of your favorite ways to cook fish!

Ingredients

  • four 6-8 oz. fish fillets that are about a half-inch thick (see notes)
  • 1 tsp. Szeged Fish Rub, for rubbing on the fish. (See notes)
  • 1/2 cup mayo
  • 4 T freshly-grated or coarsely-grated Parmesan
  • 1/2 tsp. garlic powder
  • coarse ground black pepper to taste

Instructions

  1. Thaw fish overnight in the fridge and then drain well. (f the fish seems quite wet, I would place it between two paper towels and press out the excess moisture.
  2. Lay fish out on the cutting board, rub on both sides with Szeged Fish Rub (affiliate link) (or your favorite brand) and let fish to come to room temperature while you preheat oven to 400F/200C.
  3. In a small bowl or glass measuring cup combine the mayo, coarsely grated Parmesan, and garlic powder. The mixture will be stiff, try to get it combined well.
  4. Keeping the fish on the cutting board, use a rubber scraper to spread that mixture in an even layer on the top of each piece of fish. (It was much less messy to do that on the cutting board than when the fish was in the baking dish; trust me on that!)
  5. Then carefully transfer fish to the baking dish, use the smallest dish you have that fits all the pieces. Season with some fresh-ground black pepper to taste over the topping on the fish. Bake fish in the upper half of the oven for about 12 minutes, or until the fish is starting to get firm when you press on the side with a fork (thicker pieces will take longer to bake).
  6. Then switch your oven to BROIL and brown the topping for 3-4 minutes. (Watch it carefully!) Serve hot.

Notes

We used frozen Mahi Mahi from Costco, use any firm mild fish that you enjoy for this recipe. I am crazy about Szeged Fish Rub (affiliate link) and use it on nearly every kind of fish I cook, but there are other good ones on the market.

This recipe was inspired by readers who told me how they loved the topping from Internet's Best Low-Carb Baked Mayo-Parmesan Chicken used on fish!

Nutrition Information:

Yield:

4

Serving Size:

1

Amount Per Serving: Calories: 637Total Fat: 26gSaturated Fat: 5gUnsaturated Fat: 19gCholesterol: 360mgSodium: 674mgCarbohydrates: 2gFiber: 0gSugar: 0gProtein: 94g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

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Easy Low-Carb Baked Mayo-Parmesan Fish found on KalynsKitchen.com

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Baked Mayo-Parmesan Fish is a great dish for low-carb or Keto diet plans, and this recipe is gluten-free. If you’re making it for any phase of the original South Beach Diet, they would recommend reduced-fat mayo and possibly a bit less Parmesan. I think it will still be pretty good even with lower-fat ingredients, but personally I’d probably just splurge a bit on the mayo and Parmesan; your choice on that!

Find More Recipes Like This One:
Use Seafood Recipes for more ideas for fish dinners or Oven Dinners for more baked main dishes like this. Use the Diet Type Index to find recipes suitable for a specific eating plan. You might also like to Follow Kalyn’s Kitchen on Pinterest to see all the good recipes I’m sharing there.

Historical Notes for this Recipe:
This recipe was posted in 2019. It was last updated with more information in 2021.

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