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    Home » Keto Dinner Ideas » Oven Roasted Salmon with Wasabi Mayonnaise

    Published: Oct 11, 2021 · Modified: Apr 29, 2022 by Carolyn

    Oven Roasted Salmon with Wasabi Mayonnaise

    This post may contain Amazon or other affiliate links. As an Amazon Associate I earn from qualifying purchases.

    654 shares
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    This oven roasted salmon results in buttery, flaky fish that’s table ready in less than 30 minutes. It is hands down my family’s favorite keto salmon recipe. So nutritious and satisfying.

    A piece of roasted keto salmon on a black plate with wasabi mayonnaise and chopped green onions on top.

    I am delighted to re-introduce you to one of my all time favorite easy keto meals. We make this roasted salmon recipe at least twice a month, and it’s a healthy dinner I can guarantee my whole family will eat willingly.

    This little gem of a recipe has been hiding in my recipe archives for a very long time, not really getting the attention it deserves. I figured it was time to dust it off again and bring it back to the forefront.

    And it’s actually a prize-winning recipe! It won second prize and $200 in a Taste of Home recipe contest.

    Pair it with any one of these cauliflower rice recipes for a delicious and nutritious meal.

    And check out Sizzlefish for delicious seafood, delivered straight to your door. Free shipping on orders over $100!

    Keto oven roasted salmon in a white dish with sesame seeds on top.

    Roasting salmon in the oven

    Everything I know about roasted salmon I learned from Mark Bittman’s book, How to Cook Everything. You know I believe in giving credit where it’s due! It’s not a keto cookbook, by any means, but it is a great reference book.

    Over the years, I modified his recipe in a number of ways, simplifying the process and roasting at a slightly lower temperature. Then I decided to add some sesame oil, sesame seeds, and some wasabi mayo – and it became an instant hit.

    Baking and roasting are very closely related concepts, and they both use dry oven heat. But roasting typically refers to cooking over 400F, whereas baking temps are usually 375F and below. However, most people use these terms interchangeably.

    Using high heat for this oven roasted salmon cooks it quickly and evenly, while keeping it moist and flaky.

    A piece of oven roasted salmon being lifted out of a white baking dish on a spatula.

    What you need for this keto salmon recipe

    This is an incredibly simple recipe with readily available ingredients. You can play with the flavor profile and add your favorite toppings.

    • Salmon: It’s worth purchasing good wild-caught salmon for this recipe as it results in a buttery texture. It also has the best nutritional profile. You can use frozen salmon but be sure to thaw it completely and pat it dry before roasting.
    • Butter: This is the magic sauce, in my opinion. The butter melts in the pan as the oven preheats, and it becomes slightly nutty and caramelized during the cooking process.
    • Garlic powder: A light sprinkle of garlic brings out the best flavor.
    • Salt: Add just a little sprinkle of salt before roasting, and season to taste after it’s done.

    You could stop here and simply drizzle the melted butter over the fish before serving, and it would be fabulous. But my sushi inspired version is over the top delicious!

    • Wasabi: You can purchase this as a ready made paste, or you can purchase wasabi powder that you mix with water to create a paste. I prefer the powder as it goes a lot further than pre-made pastes and has more heat.
    • Mayonnaise: Mayo provides a great base for mixing in the wasabi, and it helps mellow it out as well. You don’t want it to completely overpower the flavor of the salmon!
    • Sesame oil: Brush the salmon with some toasted sesame oil after cooking for extra flavor.
    • Sesame seeds and green onion: These garnishes add both flavor and elegance to the final dish.

    Tips for oven roasted salmon

    Salmon is remarkably easy to cook, but it’s also easy to overcook if you’re not careful. Here are my best tips to getting it right:

    1. Pat the salmon dry. The residual moisture from the packaging can pool around the fish during cooking and doesn’t look as all that appetizing.
    2. Melt the butter as the oven preheats. This saves time and energy, and simplifies the whole process.
    3. Season just before cooking. Salt draws out moisture and we don’t want any dry fish. So sprinkle it on just before the salmon goes into the oven.
    4. Watch your timing. Salmon portions vary quite a bit in thickness and this affects cooking time. For thinner filets of an inch or less, check them at the early end of the cooking range. For thick filets, you may need the whole 13 minutes.
    5. Flake the fish. The best way to tell if salmon is done is to flake it with a thin-bladed knife. The fish should be opaque and the the flakes should separate easily. Check the thickest portion of the filet for doneness.
    6. Remove immediately. Once you see that perfect flakiness, get it out of the oven right away and brush it with the sesame oil.
    7. Serve. Oven roasted salmon should be served right away. Top each portion with some wasabi mayonnaise, a sprinkle of toasted sesame seeds, and some sliced green onion.
    Perfectly roasted salmon on a black plate with broccoli and a fork.

    Frequently Asked Question

    I don’t like wasabi, can I do another flavor?

    The best part about this oven roasted salmon is how versatile it is. You can do any flavor you like here. Try the spicy mayo I used for my Air Fryer Crab Cakes. Or try it with some pesto. It’s also great with a simple squeeze of lemon.

    Can I make this dairy free?

    You bet. I recommend using avocado oil or plain (un-toasted) sesame oil in place of the butter.

    What about using other fish?

    This oven roasting method is perfect for any firm fish like sable fish, halibut, or trout.

    How do I toast sesame seeds?

    If yours aren’t pre-toasted, it’s easy to do it yourself. Place them in a pan over medium heat and stir until they are golden brown. This should only take a few minutes so don’t walk away. Remove them from the pan immediately to keep them from overcooking.

    Can you make oven roasted salmon in advance?

    I do not recommend it. As with most fish recipes, salmon is best served hot out of the oven. If you do have any leftovers, you can store them in a covered container in the fridge and reheat very gently. Consume within 3 days.

    Close up shot of roasted salmon with wasabi mayo, and a forkful taken out of the salmon.

    More delicious salmon recipes

    • Garlic Butter Salmon
    • Keto Smoked Salmon Chowder
    • Pecan Crusted Salmon
    • Salmon Avocado Salad
    • Easy Grilled Salmon
    • Salmon Patties


    Keto oven roasted salmon in a white dish with sesame seeds on top.

    Oven Roasted Salmon Recipe

    This oven roasted salmon results in buttery, flaky fish that's table ready in less than 30 minutes. It is hands down my family's favorite keto salmon recipe. So nutritious and satisfying.
    5 from 3 votes
    Print Pin Rate
    Course: Main Course
    Cuisine: Main Course
    Keyword: keto salmon, oven roasted salmon
    Prep Time: 10 minutes
    Cook Time: 12 minutes
    Total Time: 22 minutes
    Servings: 6 servings
    Calories: 462kcal

    Ingredients

    Wasabi Mayonnaise

    • 2 to 3 teaspoon wasabi powder (depending on how hot you like it)
    • 1 to 2 teaspoon hot water
    • ⅓ cup mayonnaise

    Baked Salmon

    • 3 tablespoon butter (or untoasted sesame oil)
    • 2 pounds salmon fillets (whole or cut into portions)
    • ¼ teaspoon garlic powder
    • Salt to taste
    • 1 tablespoon toasted sesame oil
    • 2 tablespoon sesame seeds toasted
    • 2 medium green onions white and light green parts only, chopped
    US Customary – Metric

    Instructions

    Wasabi Mayonnaise

    • Whisk the wasabi powder and the water together to form a paste. Let sit 5 minutes to develop the flavors
    • Whisk together the mayonnaise and wasabi paste.

    Baked Salmon

    • Preheat the oven to 425F. Place the butter in a large glass or ceramic baking dish and set in the oven to melt.
    • Once the oven is preheated and the butter is melted, place the salmon, skin-side down in the pan. Spoon some of the melted butter overtop and sprinkle with the garlic powder and the salt. Place the pan back in the oven.
    • Bake 9 to 13 minutes, depending on the thickness of the fish. The salmon should be opaque and flake easily when done. Be sure to watch carefully to avoid over-cooking.
    • Remove from the oven and brush the the toasted sesame oil. Sprinkle with the sesame seeds.
    • Serve with wasabi mayo and green onions overtop each serving.
    Nutrition Facts
    Oven Roasted Salmon Recipe
    Amount Per Serving (1 piece (about 5 ounces of fish))
    Calories 462 Calories from Fat 270
    % Daily Value*
    Fat 30g46%
    Carbohydrates 1.3g0%
    Fiber 0.5g2%
    Protein 31.3g63%
    * Percent Daily Values are based on a 2000 calorie diet.
    654 shares

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    Nutritional Disclaimer

    Please note that I am not a medical or nutritional professional. I am simply recounting and sharing my own experiences on this blog. Nothing I express here should be taken as medical advice and you should consult with your doctor before starting any diet or exercise program. I provide nutritional information for my recipes simply as a courtesy to my readers. It is calculated using MacGourmet software and I remove erythritol from the final carb count and net carb count, as it does not affect my own blood glucose levels. I do my best to be as accurate as possible but you should independently calculate nutritional information on your own before relying on them. I expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website.

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      Recipe Rating




    1. Taylor says

      June 06, 2022 at 7:15 am

      5 stars
      This was so delicious! The salmon was so flaky and tender and that wasabi mayo on top really makes the dish. Will definitely make again!

      Reply
    2. Kristyn says

      June 05, 2022 at 10:45 pm

      5 stars
      Salmon is my favorite fish & the wasabi mayo adds a burst of flavor!! I’ll be adding it from now on!

      Reply
    3. Diana says

      June 05, 2022 at 7:14 pm

      5 stars
      The salmon was delicious but the wasabi mayo is everything! My husband loved it and said it was a restaurant-quality meal.

      Reply
    4. Jennifer says

      April 04, 2022 at 9:59 pm

      OMGosh. The wind was blowing so hard, gusts up to 70mph, and I knew I couldn’t ask my husband to grill the salmon, our go to way of cooking Alaskan salmon. I had just read Carolyn’s recipe and decided to try it in the oven. It is lovely and very delicious. You can monitor the heat by the amount of wasabi which I have to do since my husband doesn’t like heat, however, the asian flavor is there. It is a lovely dish and the fact that the salmon is bathed in butter doesn’t hurt either. Thank you Carolyn.

      Reply
      • Carolyn says

        April 04, 2022 at 10:06 pm

        I am so glad you gave it a try! I love grilled salmon but this is one of my favorite ways to prepare it without grilling.

        Reply
    5. Carol Taylor says

      June 03, 2018 at 6:19 am

      did you use the dark (toasted) sesame oil…that is the one I usually buy

      Reply
      • Carolyn says

        June 06, 2018 at 2:54 pm

        Yes, that’s fine.

        Reply
    6. Carol Taylor says

      June 03, 2018 at 6:17 am

      what is the net carb count per serving?

      Reply
      • Carolyn says

        June 06, 2018 at 2:54 pm

        Not sure but it should be easy to calculate on your own.

        Reply
    7. Katharine says

      August 13, 2012 at 10:00 am

      Any chance it’s been long enough and this recipe can go back up? Sounds delicious! I’m doing some major low carb meal planning and this caught my eye! 🙂

      Reply
    8. Jeanette says

      January 07, 2011 at 12:22 am

      Looks and sounds delicious. I love sesame seeds. We have a dairy and egg allergy in our family, so I will use olive oil instead of butter and serve with a soy wasabi sauce.

      Reply
    9. Maria says

      January 06, 2011 at 11:45 pm

      I love the wasabi mayo on top! Nice touch!

      Reply
    10. Dionne says

      September 23, 2010 at 1:10 am

      We made this on Monday and it was SO good!

      Reply
    11. alittleyum says

      September 10, 2010 at 9:36 pm

      Wasabi and mayo is great! I cannot wait to try this!

      Reply
    12. Stella says

      September 10, 2010 at 12:51 am

      Oh Goodness, that mayo sounds awesome, and I know it was so good with that delicious, fatty salmon. Ooh, sriracha mayo is yummy too in case you've never tried it. In fact, it's out of this world wonderful (smile)! XO, Stella

      Reply
    13. Moogie says

      September 09, 2010 at 8:42 pm

      I'm your newest follower. http://moogieland.blogspot.com/

      Reply
    14. ravienomnoms says

      September 09, 2010 at 5:25 pm

      The wasabi mayonnaise is definitely my favorite part of this, sounds soooo good! I have to agree with the above comment ^…I would want to put that and serve it on everything!

      Reply
    15. The Mom Chef says

      September 09, 2010 at 2:51 am

      The wasabi mayonnaise sounds amazing. I think I want to make that and serve it with EVERYTHING!

      Reply
    16. Torviewtoronto says

      September 08, 2010 at 10:13 pm

      looks delicious spicy

      Reply
    17. Kate says

      September 08, 2010 at 9:54 pm

      What a lovely combination of flavors!!! I'm saving this to try next time we fix salmon. Kate@kateiscooking

      Reply

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