Salmon Recipes Cookbook: Lemon-Dill Sheet-Pan Salmon

This lemon-dill sheet-pan salmon is a complete dinner of tender roasted fish, crisp-edged potatoes, and green beans, finished with a bright mustard-and-lemon dressing. Cooking everything on one pan keeps the method simple, while adding the salmon later lets the potatoes soften without overcooking the fish.

Ingredients

1½ lb (680 g) baby potatoes, scrubbed and halved or quartered so the pieces are about 1 inch (2.5 cm)
3 tbsp (45 ml) olive oil, divided
1 tsp (6 g) fine salt, divided, plus more to taste
½ tsp (1 g) freshly ground black pepper, divided
1½ lb (680 g) salmon fillet, preferably in one piece or four evenly thick portions
12 oz (340 g) green beans, stem ends trimmed
1 medium lemon (about 100 g), finely zested and juiced; reserve a few thin slices for serving if desired
1 tbsp (15 g) Dijon mustard
2 cloves garlic (about 6 g), finely grated or minced
2 tbsp (6 g) finely chopped fresh dill, plus extra for serving
1 tbsp (4 g) chopped fresh parsley, optional

Instructions

Heat the oven to 425°F (220°C), and place a rack in the center. Line a large rimmed baking sheet with parchment for easier cleanup, if desired. While the oven heats, wash and cut the potatoes, trim the beans, and prepare the lemon, garlic, and dill. The potatoes should be in similarly sized pieces so they cook evenly.
Put the potatoes on the baking sheet and toss them with 1½ tablespoons (22 ml) of the olive oil, ½ teaspoon (3 g) of the salt, and ¼ teaspoon (0.5 g) of the pepper. Spread them cut-side down in a single layer, leaving a clear area for the salmon and beans later. Roast for 20 minutes. The potatoes should be starting to brown at the edges; they will finish cooking after the other ingredients go onto the pan.
Meanwhile, stir together the remaining 1½ tablespoons (22 ml) olive oil, lemon zest, 2 tablespoons (30 ml) lemon juice, Dijon mustard, garlic, dill, and parsley, if using, in a small bowl. The mixture will be loose but slightly creamy from the mustard. Taste a small dab and add a pinch of salt or pepper if you like. Set aside about one-third of the dressing to spoon over the finished fish, using a clean spoon so the reserved portion stays separate.
Pat the salmon dry with paper towels. If it is a whole fillet, check for pin bones by running your fingertips over the flesh and remove any you find with clean tweezers. Place the salmon skin-side down on the open part of the hot baking sheet. Brush or spoon most of the remaining dressing over the top. Season with the remaining ½ teaspoon (3 g) salt and ¼ teaspoon (0.5 g) pepper, adjusting the amount if your mustard is especially salty.
Toss the green beans with any dressing left in the bowl, then arrange them around the salmon, keeping them in a single layer where possible. If the pan feels crowded, move a few potatoes toward the corners rather than stacking the beans. A little open space helps moisture escape, so the vegetables roast instead of steam.
Return the pan to the oven and roast for about 13 minutes. Begin checking the salmon at 12 minutes; thinner portions may finish sooner, while a thick center-cut fillet can need a few minutes more. The USDA FSIS safe minimum internal temperature for fish is 145°F (63°C), checked with a food thermometer in the thickest part. Insert the thermometer from the side for a thin portion, and avoid touching the pan. If the fish has not reached that temperature, continue roasting and check again after a short interval.
Take the pan out when the salmon reaches 145°F (63°C) and the potatoes are tender when pierced with a knife. Let the fish rest for 2 minutes on the pan. The center should look opaque and separate into moist flakes when gently pressed, though the thermometer—not appearance alone—determines that it has reached the safe minimum. If the potatoes need more time, transfer the salmon to a plate and return the potatoes to the oven for a few minutes.
Spoon the reserved lemon-dill dressing over the salmon, scatter on extra dill, and serve hot with the potatoes and green beans. Add lemon slices at the table for anyone who wants a sharper citrus finish. Divide a whole fillet into four portions with a thin spatula, lifting from the skin so the flesh stays intact.

Tips

Choose salmon with a similar thickness. Four portions cut from the center of a fillet cook more evenly than pieces with very thin tails. If using a whole fillet, fold a thin tail section underneath itself so it is closer in thickness to the middle. Start checking early regardless, because the exact time depends on the fish, oven, and how cold the salmon was when it went in.
Thaw frozen fish safely. Move frozen salmon to the refrigerator the night before cooking and keep it in a dish to catch drips. Pat it dry before adding the dressing. Avoid roasting it directly from frozen for this timing: the outside and center cook at different rates, and the vegetables may be ready before the fish reaches a safe temperature.
Keep the pan uncrowded. Use a large rimmed baking sheet, ideally about 18 by 13 inches (46 by 33 cm). If the vegetables are piled on top of one another, they release moisture and soften rather than brown. For a smaller pan or a double batch, roast the vegetables on a second sheet and check both pans as they cook.
Adjust the seasoning without losing the balance. If fresh dill is unavailable, use 2 teaspoons (about 1 g) dried dill in the dressing; it tastes more concentrated, so begin with less. A little extra lemon juice can brighten a rich piece of salmon, while a small drizzle of olive oil can soften a dressing that tastes too sharp. Add either gradually and taste as you go.

Serving Suggestions

Serve the salmon straight from the pan for a relaxed dinner, or move the fish to a platter and arrange the potatoes and beans around it. A green salad with a simple vinaigrette makes the meal feel lighter without adding much preparation. Warm crusty bread is useful for catching the lemony dressing, and cooked rice or couscous can take the place of some of the potatoes if you want a different balance on the plate.

For a more substantial spread, add a bowl of cucumber salad or steamed peas and offer extra lemon wedges. The dill dressing is assertive enough to season the fish and vegetables, so keep additional sides simply dressed. If serving guests, bring the thermometer and check the thickest part of the salmon before transferring it to a platter; the fish can be portioned at the table or served in four pieces.

Variations

Change the herbs: Swap the dill for 2 tablespoons (6 g) chopped parsley, or use 1 tablespoon (3 g) parsley with 1 tablespoon (2 g) chopped chives. Parsley gives a milder, greener flavor, while chives add a gentle onion note. Tarragon also works, but its anise-like taste is stronger, so use about 1 tablespoon (2 g) chopped leaves rather than the full amount of dill.

Use another vegetable: Broccoli florets, asparagus, or thinly sliced fennel can replace the green beans. Cut broccoli into small, even florets; trim asparagus to fit the pan; and slice fennel thinly so it has time to soften. Very thin asparagus may need less oven time than beans, so add it for only the final 8 to 10 minutes. Keep the salmon cooking until it reaches 145°F (63°C), even if a vegetable finishes first.

Make it a little spicy: Add ¼ teaspoon (0.5 g) red pepper flakes to the dressing, or serve a mild chili sauce at the table. For a sweeter, less sharp finish, whisk 1 teaspoon (7 g) honey into the dressing. Honey browns more quickly, so watch the fish near the end of cooking and avoid brushing on a thick extra layer.

Try a different potato: Small Yukon Gold potatoes are creamy and hold their shape well. Larger potatoes can also be used if cut into 1-inch (2.5 cm) pieces. Russets tend to become fluffier and may break apart when tossed, so handle them gently and spread them out with a spatula rather than shaking the pan.

Storage and Reheating

Refrigerate leftover salmon and vegetables within 2 hours of cooking. Transfer them to shallow, airtight containers; cooked salmon and roasted vegetables keep for 3 to 4 days in a refrigerator at 40°F (4°C) or below. If the salmon was served at a warm outdoor meal, do not leave it out while the table is cleared for an extended period—pack it promptly, and discard food that has been at room temperature for more than 2 hours, or more than 1 hour when the temperature is above 90°F (32°C).

For the gentlest reheating, place a portion in a covered oven-safe dish with a teaspoon of water or broth and warm it in a 300°F (150°C) oven until the center reaches 165°F (74°C). Check with a food thermometer; reheated leftovers should reach 165°F (74°C). A microwave also works: cover the fish loosely, heat in short intervals at medium power, and check the center so it does not become dry. Reheat only the amount you plan to eat, rather than warming the same leftovers repeatedly.

You can freeze the cooked salmon and vegetables in airtight freezer-safe packaging for about 2 to 3 months for best quality. Thaw overnight in the refrigerator and reheat to 165°F (74°C). The texture of the green beans and potatoes may soften after freezing, and the salmon may be less delicate than when freshly cooked; freezing is still a practical option for leftovers you will not use within a few days.

Frequently Asked Questions

Can I use skin-on salmon? Yes. Place it skin-side down, as directed, and leave the skin on during roasting. It helps protect the flesh from direct heat, and the salmon can be lifted away from the skin when serving if you do not want to eat it. The skin may not turn crisp on a crowded sheet pan, but the fish will still cook properly.

Can I use individual salmon portions instead of one large fillet? Yes. Arrange the portions with a little space between them and check each piece separately, since smaller or thinner portions can reach 145°F (63°C) before the thickest one. Take finished pieces off the pan as needed, and let the potatoes and remaining fish continue cooking. The total time is an estimate, not a substitute for checking temperature.

What can I use instead of green beans? Asparagus, broccoli, or sliced fennel are good options. Cut them so they cook in roughly the time available after the potatoes have roasted, and give especially thin vegetables less time. If using a vegetable that needs longer, roast it with the potatoes from the beginning or start it on a separate pan rather than leaving the salmon in the oven while it overcooks.

How do I keep the salmon from drying out? Choose a piece of even thickness, avoid cooking it far past 145°F (63°C), and begin checking at the early end of the stated range. The thickest part is the best place to measure. Resting for 2 minutes is enough for this recipe; a long rest is unnecessary and can make the fish cool while the vegetables wait.

Can I prepare any part of the recipe ahead? You can wash and cut the potatoes, trim the beans, and mix the dressing several hours ahead. Keep the cut vegetables covered in the refrigerator, and refrigerate the dressing in a sealed container. For the freshest texture, cut potatoes shortly before roasting or keep them submerged in cold water in the refrigerator, then drain and dry them thoroughly before tossing with oil.

What if the potatoes are not tender when the salmon is done? Move the salmon to a plate and loosely cover it while the potatoes roast for a few more minutes. Check that the salmon already reached 145°F (63°C) before removing it; do not rely on its resting time to bring it to the safe minimum. Returning only the potatoes to the oven avoids overcooking the fish and lets the vegetables finish on the same sheet.

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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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