A salmon fillet baked in a hot oven cooks quickly, stays tender, and needs only a little oil, seasoning, and lemon. At 400°F (200°C), plan on about 12–15 minutes for a 1-inch-thick fillet, then use a food thermometer to check that the center reaches a safe temperature.
Ingredients
- 4 salmon fillets, about 6 ounces (170 g) each and 1 inch (2.5 cm) thick, skin on or off
- 1 tablespoon (15 ml) olive oil
- ¾ teaspoon (4.5 g) fine salt
- ¼ teaspoon (0.5 g) freshly ground black pepper
- 1 medium lemon, half thinly sliced and half cut into wedges, about 4 ounces (115 g)
- 1 garlic clove, finely grated or minced, about 1 teaspoon (3 g)
- 1 tablespoon (4 g) chopped fresh dill or parsley, plus a little more for serving
Instructions
- Heat the oven and prepare the pan. Set a rack in the center of the oven and preheat to 400°F (200°C). Line a rimmed baking sheet with parchment for easy cleanup, or lightly oil the pan. Preparing the fish and pan while the oven heats should take about 15 minutes altogether; if your oven takes longer to preheat, wait until it is fully hot before baking so the timing is useful.
- Dry and arrange the salmon. Pat the fillets dry with paper towels; removing surface moisture helps the seasoning adhere and prevents excess liquid from collecting on the pan. Place them skin-side down, if they have skin, with a little space between each piece. If the fillets vary in thickness, arrange the thicker pieces toward the hotter back of the oven and check thinner pieces first.
- Season the fish. Stir the olive oil, salt, pepper, and garlic together, then brush or spoon the mixture over the tops and sides of the fillets. Lay lemon slices over or beside the fish. Add the dill or parsley now for a mild baked-herb flavor, or save it for the end if you prefer its flavor fresher and more pronounced.
- Bake for 12–15 minutes. Put the pan in the center of the oven and begin checking at 12 minutes. A 1-inch-thick fillet often takes about 12–15 minutes, while a thicker piece may need longer and a thin tail piece may finish sooner. The most dependable measure is temperature, not color or a fixed number of minutes: insert an instant-read thermometer into the thickest part of each fillet, avoiding the pan. The USDA FSIS safe minimum internal temperature for fish is 145°F (63°C); cook each piece to at least that temperature.
- Rest briefly and serve. Once the salmon reaches 145°F (63°C), take the pan out and let the fillets rest for 3 minutes. The fish may look slightly opaque and separate into moist flakes when gently pressed with a fork, but appearance alone does not confirm safe doneness. Finish with chopped herbs and lemon wedges. The recipe’s planned cook time of 18 minutes allows up to 15 minutes in the oven and a 3-minute rest.
Tips
- Thickness matters more than weight. Two fillets can weigh the same but cook at different speeds if one is broad and thin and the other is compact and thick. Use the 12-minute check as a starting point, not a promise, and check every piece at its thickest point. If the fillets are much thicker than 1 inch, allow extra time in short increments rather than turning the oven hotter.
- Choose skin-on or skinless according to preference. Skin-on fillets are easy to lift from the pan with a fish spatula, and the skin helps hold the fish together. Bake them skin-side down and do not try to crisp the skin on parchment; oven-baked skin is usually tender rather than crisp. Skinless fillets work just as well, but handle them gently because they can break apart more easily.
- Make simple substitutions. Use a neutral oil such as avocado oil instead of olive oil, or swap the dill for parsley, chives, or a small amount of dried dill. Dried herbs are more concentrated, so start with about 1 teaspoon (1 g) in place of 1 tablespoon fresh. Lime can replace lemon, giving the fish a sharper, slightly different citrus flavor. If you do not have fresh garlic, omit it rather than using a large amount of garlic powder.
- Avoid overbaking and crowded pans. Salmon continues to feel hot after it leaves the oven, so start checking before the end of the timing range. If the fillets touch or the pan is crowded, moisture can collect and the fish may cook unevenly. Use two pans if needed, and check pieces individually because the thinner ones can finish first.
Serving Suggestions
Serve the salmon as soon as it has rested, with lemon wedges so each person can add citrus to taste. For an easy dinner, pair it with roasted potatoes, rice, couscous, or warm crusty bread, plus a green vegetable such as asparagus, green beans, broccoli, or a crisp salad. A grain or starchy side is especially useful for catching the lemony juices left on the plate.
For a lighter-feeling plate without changing the fish, serve a fillet over leafy greens with cucumber and a simple vinaigrette. For a more substantial meal, spoon the salmon and its juices over rice or pasta, and add a spoonful of yogurt-dill sauce or a mild mustard sauce. Keep sauces on the side if you want the lemon, garlic, and herbs on the fish to remain the main flavors.
Variations
Maple-mustard salmon: Mix 1 tablespoon (15 ml) Dijon mustard with 1 tablespoon (15 ml) maple syrup and brush a thin layer over the fillets before baking. The glaze adds sweetness and tang; check the fish on schedule because sugary coatings can darken, though at this temperature a thin layer should not need a separate cooking method.
Smoky paprika: Add ½ teaspoon (1 g) smoked paprika to the oil and seasonings. It gives the surface a warm, smoky note without requiring a grill. For a gentle heat, add a pinch of red pepper flakes; use less if the fish is being served to people who prefer mild flavors.
Herb and caper finish: Bake the salmon with oil, salt, and pepper, then add chopped parsley, 1 tablespoon (8 g) drained capers, and a squeeze of lemon after cooking. The capers are salty and briny, so reduce the added salt slightly. This keeps the herbs bright and gives the finished fish a sharper, savory finish.
Foil packet option: Place each seasoned fillet on a piece of foil with a few thin lemon slices and fold the foil into a loose, sealed packet. Bake at the same temperature and begin checking around 12 minutes, but expect the timing to vary with packet size and fish thickness. The fish steams in its own moisture, so it will be tender but will not develop a browned surface.
Storage and Reheating
Refrigerate leftover salmon within 2 hours of cooking, in a shallow airtight container. It keeps for 3–4 days in the refrigerator. If you will not eat it within that time, freeze it in a well-sealed freezer-safe container; for best texture, use frozen cooked salmon within about 2–3 months. Thaw frozen leftovers in the refrigerator rather than on the counter.
To reheat, place the salmon in an oven-safe dish with a teaspoon or two of water, broth, or lemon juice and cover loosely with foil. Warm it in a 275°F (135°C) oven until a food thermometer reads 165°F (74°C), the safe temperature for reheated leftovers. The gentle oven helps limit drying, but reheated fish may be firmer than freshly cooked salmon. You can also flake cold leftovers into a salad or sandwich; keep them chilled until serving and return any uneaten portion to the refrigerator promptly.
Frequently Asked Questions
How long does salmon take to bake at 400°F?
For a fillet about 1 inch (2.5 cm) thick, allow roughly 12–15 minutes at 400°F (200°C). Thin pieces may be ready sooner, while thick center-cut portions need longer. Start checking at 12 minutes and use a thermometer in the thickest part; fish should reach 145°F (63°C) for the USDA FSIS safe minimum.
Should I bake salmon covered or uncovered?
Bake it uncovered for a lightly roasted surface and straightforward timing. Covering the pan or sealing the fish in foil traps steam and makes the texture softer, but it will not brown in the same way. Either approach can work; check the internal temperature rather than assuming covered fish is done after a particular number of minutes.
Do I need to flip salmon in the oven?
No. Place the fillet skin-side down and leave it in place while it bakes. Flipping is unnecessary and can break the flesh, especially once it has started to flake. If you want color on the top, keep the fish uncovered; the cooking time is still determined by thickness and temperature.
Can I bake salmon straight from frozen?
Yes, but expect it to take longer and to release more moisture. Remove all packaging, place the frozen fillets on a lined pan, and bake at 400°F (200°C), checking the thickest part with a thermometer and allowing extra time as needed. Separate fillets as soon as they can be moved safely, and cook each one to 145°F (63°C); do not rely on the timing for thawed fish.
How can I tell if salmon is done without a thermometer?
A cooked fillet usually looks opaque and separates into flakes with gentle pressure, but these signs are less reliable than measuring the center. Color varies by salmon type, and a piece can look done before reaching a safe temperature. For the best balance of safety and doneness, use an instant-read thermometer and check the thickest section of every fillet.
Can I prepare the salmon ahead of time?
You can measure the seasonings, chop the herbs, and cut the lemon ahead. Keep the raw fish covered in the refrigerator and season it shortly before baking for the best surface texture. If you season it in advance, refrigerate it and do not leave it at room temperature; bake it promptly, then refrigerate cooked leftovers within 2 hours.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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