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    Home » Recipes » Main Dish

    Baked Steelhead Trout with Garlic Butter Sauce

    By Lily・Published: May 3, 2023・Updated: Mar 27, 2025・Post may have affiliate links.

    Jump to Recipe Print Recipe

    This baked steelhead trout fillet with garlic butter sauce is a tender, flaky fish recipe that can be whipped up in about 30 minutes.

    roasted steelhead trout fish in a baking dish

    If you like wild salmon, you are going to love steelhead trout! Steelhead trout is similar in taste to salmon but better. Steelhead trout is not the same as rainbow trout, just FYI.

    Baked Steelhead Trout

    Oh my god, the garlic lime butter sauce! Whenever I have dinner guests and very little time, I make this garlic butter steelhead trout recipe because it is quick, easy, and delicious. This is the best baked steelhead trout recipe, and my dinner guests would agree! I have never had a guest who didn't want to know how to make this recipe, it's that good.

    Ingredient Notes

    raw steelhead trout fish

    Steelhead trout: Buy fresh if possible with previously frozen as a second option. Additionally, I choose fish that's wild-caught instead of farm-raised. That's a personal choice, however, either type will work just fine. Steelhead trout looks like salmon and tastes very similar to salmon. You can substitute salmon for this recipe if you like. Also, I recommend buying fish fillets instead of whole trout. This cuts down on cooking time and makes eating it easier!

    ingredients needed to make steelhead trout with lime garlic butter

    Mashed garlic: Fresh garlic takes on a different profile depending on how it's prepared. If you finely chop the garlic versus mashing the garlic, you will get different results. I prefer mashed garlic but minced garlic works too for the garlic butter sauce.

    How To Roast Steelhead Trout

    sliced onions and lemon

    Preheat the oven to 425 ℉ (218 ℃). Peel and slice the onion. Slice 1.5 lemons, and save the other half to squeeze over the steelhead trout.

    drizzling olive oil on top of the sliced onions

    Add the sliced onions with olive oil to a baking dish or baking sheet.

    squeezing lemon on top of the steelhead trout

    Lay the steelhead trout fillet on top skin side down. Squeeze fresh lemon juice (half of the lemon) on top of the steelhead trout.

    dried herbs and garlic granules sprinkled on top of the steelhead trout fish

    Season trout with salt, black pepper, garlic granules, and dried Italian herbs.

    sliced lemons laid on top of the trout

    Lay the fresh lemon slices on top of the trout fillets.

    baked steelhead trout

    Place trout on a middle oven rack for around 25 minutes or until cooked through.

    While the fish is baking in the oven, prepare the garlic lime butter sauce.

    How To Make Garlic Lime Butter Sauce

    Peel the garlic cloves. Using a mortar and pestle, mash the garlic cloves with a pinch of salt.

    mashed garlic in a bowl

    Cut the limes in half and juice using a lemon/lime squeezer. Melt butter on medium heat, then add the mashed garlic (or fresh minced garlic). Cook garlic until it gets golden brown while continuously stirring.

    Garlic Lime Butter Before Cooking
    Garlic Lime Butter Cooked

    At the very end before taking the sauce off the stovetop, add the lime juice. Once the steelhead trout is finished baking spoon the lime garlic butter sauce on top.

    roasted lime butter garlic fish with sliced lemons

    Tips and Tricks

    Don't skip the garlic lime butter sauce. I've made this delicious fish at least 50 or 60 times (it's that good), and the most important part is the garlic lime butter sauce.

    Use parchment paper or aluminum foil for a quick cleanup.

    Add sliced lemons on top of the fish. The lemons keep the steelhead trout moist while roasting in the oven. If you don't have lemons on hand, you can make this trout bake in a foil packet. Just lay a large piece of aluminum foil on a sheet pan or baking dish. Place the onions and fish on top and make a closed packet.

    Keep or remove the fish skin as you like. I bake this recipe with the fish skin intact, then remove it when eating.

    sliced lemons on roasted steelhead trout recipe

    Substitutions and Variations

    My first preference for the fish used in this recipe is, of course, steelhead trout. If steelhead trout is not available, substitute salmon.

    Add some sliced potatoes (or sweet potatoes) to the bottom of the pan for this to be a one-pan dinner. If using potatoes in this recipe, cook the onions and potatoes (without the fish) for about 10 minutes in the oven. The potatoes take a little longer to cook than the fish. You can also make roasted baby potatoes in a separate pan at the same time.

    Make a lemon garlic butter sauce instead of a lime garlic butter sauce. Also, add some fresh herbs to the garlic butter sauce, like rosemary, oregano, or thyme.

    Serve with a bright chopped salad like shirazi salad or vermicelli rice. A great appetizer is Italian fried calamari or steamed shrimp cocktail.

    baked steelhead trout with sliced lemons

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    📋 Recipe

    roasted steelhead trout with garlic lime butter

    Baked Steelhead Trout with Garlic Butter Sauce

    Author: Lily
    Course: Entree
    Cuisine: American
    Prep: 5 minutes mins
    Cook: 25 minutes mins
    Total: 30 minutes mins
    5 from 12 votes
    Print Pin Rate Email
    Servings 4
    This baked steelhead trout recipe with garlic butter sauce is oven-roasted over a bed of sliced onions, seasoned with salt and dried herbs, and topped with a simple garlic butter lime sauce. 

    Ingredients
     
    US Customary - Metric

    Steelhead Trout 

    • 1½ lbs steelhead trout
    • 1 onion
    • 2 tbs olive oil
    • 2 lemons
    • salt and pepper to taste
    • ½ tbs Italian herb seasoning
    • 1 teaspoon dried garlic granules

    Garlic Lime Butter Sauce

    • 4 tbs butter
    • 6 garlic cloves
    • 1 lime
    • pinch of salt

    Instructions

    Steelhead Trout Recipe

    • Heat oven to 425 ℉ (218 ℃).
    • Peel and cut an onion into slices. Put some olive oil with onions in a baking dish.
    • Place fish on top of the onions. Squeeze half a lemon over fish. Season with salt, pepper, and any other dry ingredient you fancy.
    • Slice the rest of the lemons thinly. Place the thinly sliced lemons over the top of fish.
    • Bake for about 25 minutes or until the fish is cooked through (depends on the thickness and size of fish).
    • Roast some veggies in a second pan if you like- it’s about the same cooking time.

    Garlic Lime Butter

    • Mash 6 large cloves of garlic with some salt using a mortar and pestle. Alternatively, mince the garlic finely.
    • Add butter to the pan (roughly 4 tablespoons).
    • Add the mashed garlic to the butter and cook on medium-high until garlic starts to turn golden.
    • Squeeze the juice from 1 whole lime to the sauce. Stir, take off the heat.
    • Spoon the sauce over the steelhead trout once the fish is out of the oven.

    Equipment

    mortar and pestle.
    Mortar and Pestle
    acacia wood cutting board.
    Cutting Board
    mercer cutting knife.
    Chef's Knife
    9" x 13" baking pan.
    Baking Dish
    saucepan.
    Saucepan
    lemon squeezer.
    Lemon Squeezer

    Notes

    1. Sometimes I peel and slice a potato to go under the fish. If adding potato, put the onion and potato in the oven without the fish for about 10 minutes. Then, continue with baking the fish.
    2. Storage: Store trout in the fridge for 2 to 3 days in an airtight container. Leftover steelhead trout is great atop a bed of greens or vermicelli rice.

    Nutrition

    Serving: 8 ounces | Calories: 483 kcal | Carbohydrates: 10 g | Protein: 52 g | Fat: 26 g | Saturated Fat: 10 g | Polyunsaturated Fat: 16 g | Trans Fat: 0 g | Cholesterol: 160 mg | Sodium: 362 mg | Fiber: 1 g | Sugar: 3 g

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    About Lily

    Howdy! My name is Lilian, but my friends call me Lily. I'm the founder and one of the recipe authors here at The Matbakh. I enjoy sunsets, long walks to the fridge, meaningful relationships, and anything related to food. I'm so happy you are here!

    Reader Interactions

    Comments

      5 from 12 votes (3 ratings without comment)

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      Recipe Rating




    1. Karen

      February 09, 2025 at 5:33 am

      5 stars
      Super reluctant when my husband picked up steelhead from the store recently then found this recipe! So flavorful and easy and so great! Going to try with salmon too. Thank you!

      Reply
      • Lily

        February 09, 2025 at 9:37 am

        Hi Karen! Thanks for the comment. It’s a great way to prepare salmon too!

        Reply
    2. judy

      December 03, 2024 at 2:20 pm

      5 stars
      excellent recipe

      Reply
      • Lily

        December 03, 2024 at 7:00 pm

        Thanks for the comment!

        Reply
    3. J.Brock

      November 17, 2024 at 7:42 pm

      5 stars
      Excellent recipe ! I sometimes use orange slices below the fish to prevent sticking to the baking dish & on the fish for the flavor.

      Reply
      • Lily

        November 17, 2024 at 9:20 pm

        I’ll try oranges next time, those sound great!

        Reply
    4. Diane

      August 28, 2024 at 3:12 pm

      5 stars
      I have now made the steelhead trout recipes four times. I just love it. Who would have thought baking fish on onions would taste sooo good. I do love onions. Thank you for your creativity.

      Reply
      • Lily

        August 28, 2024 at 4:04 pm

        Yay! This recipes is one of my favorites, especially for busy weeknights. Sometimes I roast baby butter potatoes on a second sheet pan at the same time. The potatoes are on the blog if you search baby gold potatoes.

        Reply
    5. Diane

      September 24, 2023 at 9:40 am

      5 stars
      Made this last night for my family. Excellent recipe. I added mushrooms to the onions because we love them. The lime butter garlic sauce is a must; it pumps the flavor up a couple of notches. Easy to put together and even easier to enjoy. Thanks so much!

      Reply
      • Lily

        September 24, 2023 at 10:04 am

        Hi Diane, Thank you so much for the comment! The lime garlic butter sauce is my FAVE with this fish! So glad you and your family enjoyed the recipe.

        Reply
    6. Patricia

      February 23, 2023 at 1:18 am

      Valuable info. Lucky me I found your website by accident, and I'm shocked why this accident didn't happened earlier! I bookmarked it.

      Reply
    7. Steven Steven

      January 01, 2022 at 12:05 pm

      I think it's worth mentioning that you should use a skinless filet of fish in this recipe.

      Reply
      • Lily

        January 01, 2022 at 1:10 pm

        Hi Steven, thanks for the comment! That's a great point, feel free to use a skinless fish for this recipe. I might be weird, but I make it with the skin on 😳. I ran into issues with the skin on in one scenario: if I roasted the onions first before putting the fish on top. The skin will stick in that case to the onions. Also, I don't eat the skin. The fish easily peels away from it. I think it's easy to get the fish skinless though if that's bothersome.

        Reply
    8. Christina

      June 08, 2020 at 6:00 am

      5 stars
      Loved it!!!

      Reply
    9. Kat

      April 22, 2020 at 1:03 am

      5 stars
      This was really good- I appreciate the recipe!

      Reply
    10. Stan L.

      February 23, 2020 at 1:11 pm

      5 stars
      Yum

      Reply
      • Lilian B.

        February 24, 2020 at 11:14 pm

        Thanks Stan for your review!

        Reply
    11. S. Gabar

      January 21, 2020 at 10:54 pm

      5 stars
      First time to try steelhead trout and it was really so good. I added some olive oil to the top before baking. Ate it With roasted potatoes- heavenly.

      Reply
      • Lilian B.

        January 22, 2020 at 11:15 pm

        S. Gabar- I appreciate your review!

        Reply

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    lily at the matbakh

    I'm Lily

    I'm an American Lebanese living in Texas. My kitchen, or matbakh, is a hodgepodge of recipes from the U.S. and Mediterranean region.

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