From start to finish, garlic butter steelhead trout baked in foil is one of the simplest trout recipes you can make. Baking the fish in foil with garlic, butter, and lemon creates a classic combination that produces moist, buttery, flavorful trout. With only minutes of prep and almost no cleanup, this is a quick 25–30 minute meal from start to finish.
Steelhead trout resembles salmon in color and taste but is generally a touch milder. It’s distinct from rainbow trout, which is typically lighter in color and tends to be milder in flavor. Regardless, steelhead stands up well to bold seasoning while staying tender and flaky when cooked in foil.
The foil method is ideal for minimal cleanup and reliable results. Wrapping the fish creates a steam pocket that locks in moisture, producing juicy, tender meat. Because the trout cooks in its own steam and butter, it stays succulent without drying out.
Ingredients Notes and Substitutions
- Steelhead trout filet: Choose a single longer portion rather than individually cut pieces. Leaving the skin on is optional; it will usually separate easily from the flesh after cooking. Salmon (including sockeye) works as a great substitute if you can’t find steelhead.
- Butter: Butter forms the herb paste that coats the fish and adds rich flavor. Use salted or unsalted; if you use unsalted butter, add a bit more salt to taste.
- Lemon: Fresh lemon is best added just before serving—a squeeze brightens the dish. Lemon zest in the butter adds extra brightness if you prefer.
- Garlic: Fresh garlic yields the best flavor and texture. Finely mince or grate garlic into the butter paste rather than using pre-minced garlic or garlic powder.
See the recipe card below for exact ingredient amounts.
Expert Tips
- Soften the butter to a spreadable consistency so you can evenly coat the filet. This ensures every bite has garlic-herb butter. Alternatively, you can melt the butter and spoon it over the fish.
- The foil technique works for virtually any firm white fish or salmon; try it with cod, haddock, or salmon. For larger fillets, use two sheets of foil crimped together or a wider roll of foil to create a roomy packet.
More Seafood Recipes
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Sesame Ginger Salmon in Foil Recipe
Grilled Salmon with Basil Butter Recipe
Bourbon Glazed Salmon Recipe
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Garlic Butter Steelhead Trout
Ingredients
- 1 pound steelhead trout filet, skin removed optional
- 1/3 cup butter, softened/room temp
- 2 cloves garlic, minced or grated
- small handful fresh parsley, minced
- small handful fresh dill, minced
- Lemon slices, to top
- Salt to taste
Instructions
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Preheat oven to 350°F (175°C).
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Place softened butter in a small bowl and stir in the garlic, parsley, and dill until fully combined.
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Roll out a sheet of aluminum foil about 8 inches longer than the filet (or join two sheets for larger fillets). Place the trout in the center of the foil and fold up the sides slightly to form a shallow tray.
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Season the trout with salt, then spread the herb butter over the top of the filet or add several dollops. Arrange lemon slices on top.
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Fold the foil over the trout and seal the edges to make a tight packet. Place the packet on a baking sheet and bake until the fish is cooked through, about 15–18 minutes depending on thickness.
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Carefully open the packet when ready to serve—the steam will be hot. Finish with a squeeze of fresh lemon if desired and serve immediately.
Notes
Softened butter spread evenly over the filet ensures full coverage; melted butter poured over the fish also works. This foil method is flexible—use it for cod, haddock, salmon, or any similar fish. For larger fillets, join foil sheets to create more space.
Nutrition
Calories: 357 kcal
Carbohydrates: 1.9 g
Protein: 45.7 g
Fat: 17.2 g
Nutrition values are estimates and should be used as a guideline.