This New Zealand-inspired baked salmon dinner pairs tender salmon fillets with roasted kūmara, crisp green beans and a bright lemon-dill sauce. It uses familiar ingredients available in New Zealand and elsewhere, and the tray-bake method makes a colourful meal without complicated cooking.
Ingredients
- 1½ lb kūmara, peeled if desired and cut into ¾-inch (2 cm) cubes (680 g); orange sweet potato is a suitable substitute, with a slightly less earthy flavour
- 2 tbsp olive oil, divided (30 ml)
- ¾ tsp fine salt, divided (4 g)
- ½ tsp freshly ground black pepper, divided (1 g)
- 4 skin-on or skinless salmon fillets, about 6 oz each (170 g each; 680 g total), pin bones removed
- 1 medium lemon, finely grated for 1 tsp zest and cut into wedges (about 100 g)
- 1 tbsp Dijon mustard (15 g)
- 1 tbsp honey (21 g)
- 1 garlic clove, finely grated or minced (about 3 g)
- 1 tbsp chopped fresh dill (3 g), plus extra to serve
- 1 tbsp chopped flat-leaf parsley (4 g)
- 1 lb green beans, trimmed (450 g)
- ½ cup plain unsweetened Greek-style yoghurt (120 g)
- 1 tbsp cold water, plus more if needed (15 ml)
Instructions
- Heat the oven to 400°F (200°C). Line a large rimmed baking sheet with baking paper or foil. If the kūmara pieces will not fit in a single layer with space between them, prepare a second sheet; crowded vegetables tend to soften rather than brown.
- Put the kūmara on the sheet and toss with 1 tablespoon (15 ml) of the olive oil, ½ teaspoon of the salt and ¼ teaspoon of the pepper. Spread the pieces cut-side down where possible. Roast for 20 minutes, until the edges begin to colour and a knife meets only slight resistance. Smaller cubes may cook sooner, so check them before moving on.
- While the kūmara roasts, stir together the remaining 1 tablespoon (15 ml) olive oil, lemon zest, Dijon mustard, honey, garlic, dill, parsley, remaining ¼ teaspoon salt and remaining ¼ teaspoon pepper. Pat the salmon dry with paper towels, then brush the herb mixture over the top and sides of each fillet. Keep the fish refrigerated until it is time to add it to the tray.
- Take the tray from the oven and turn the kūmara. Make room for the salmon fillets, leaving a little space around each one. If using skin-on fillets, set them skin-side down. Roast for 15 minutes. The exact time depends on the thickness of the fish, so check early if the fillets are notably thin.
- Check the thickest part of a fillet with a food thermometer. USDA FSIS gives 145°F (63°C) as the safe minimum internal temperature for fish; insert the thermometer into the centre without touching the tray. If the salmon has not reached that temperature, return it to the oven and check again after 2 minutes. The fish should look opaque and separate into flakes, but the thermometer is the reliable safety check.
- When the salmon is done, transfer the fish to a warm plate and let it rest for 3 minutes. Meanwhile, put the green beans in a microwave-safe bowl with 1 tablespoon (15 ml) water, cover loosely and microwave for 3 to 4 minutes until crisp-tender. Alternatively, steam them in a saucepan with a small amount of water. Drain well and season to taste with a pinch of salt.
- Whisk the yoghurt with 1 tablespoon (15 ml) cold water until it is spoonable, adding a little more water if it is very thick. Divide the kūmara and green beans among four plates, add a salmon fillet to each, and spoon the yoghurt sauce over or alongside. Finish with extra dill and lemon wedges.
Tips
- Choose similar-sized fillets. Pieces of roughly equal thickness finish at about the same time. If one fillet is much thinner, check it first and take it out as soon as it reaches 145°F (63°C), leaving thicker portions in the oven as needed.
- Keep the fish dry before seasoning. Patting the salmon dry helps the mustard-herb coating cling rather than slide off. Remove pin bones with clean tweezers if your fishmonger has not already done so, and run a fingertip along the centre line to check.
- Adjust the sauce to what you have. Fresh dill gives the most distinctive flavour, but use 1 teaspoon dried dill (about 1 g) if fresh is unavailable. Dried herbs taste more concentrated and less fresh, so avoid replacing fresh dill with an equal volume. Lemon juice can replace some zest, though the sauce will be sharper and less fragrant.
- Give the kūmara room. Spread the cubes out rather than piling them up. If they are crowded, divide them between two trays and rotate the trays once during roasting. A darkened edge is welcome; very small cubes can burn before the centres soften.
Serving Suggestions
The roasted kūmara and green beans make this a complete weeknight dinner, but the salmon also works well with steamed rice, boiled baby potatoes or crusty bread for catching the lemony yoghurt sauce. For a larger table, put the fish on a platter and surround it with the vegetables, keeping the sauce in a small bowl so everyone can add as much as they like. Serve lemon wedges at the table for extra brightness.
If you want another vegetable, add asparagus or broccoli to the bean side, rather than crowding it onto the salmon tray. A simple green salad with a lightly dressed vinaigrette is also a good contrast to the rich fish and sweet roasted kūmara. For a casual lunch, flake leftover salmon over salad leaves with a spoonful of the sauce and a few kūmara cubes.
Variations
Use another root vegetable: Swap the kūmara for orange sweet potato, or use a mix of kūmara and carrots cut into similar-sized pieces. Carrots can take a few minutes longer, so test them with a knife before adding the salmon. The flavour will be less sweet and more savoury if you use mostly carrots.
Change the herbs: Chopped chives or coriander can replace the parsley, while a little finely grated ginger can replace the garlic for a brighter, less Mediterranean-style seasoning. Keep the lemon and mustard for balance, and add unfamiliar flavours modestly so they do not overwhelm the salmon.
Make it dairy-free: Use an unsweetened plain dairy-free yoghurt in the sauce, or serve the fish with a squeeze of lemon and a drizzle of olive oil instead. If you prefer a punchier sauce, stir 1 teaspoon capers (5 g), finely chopped, into the yoghurt mixture; they add a salty, briny note, so taste before adding extra salt.
Cook individual portions separately: If the salmon fillets vary greatly in size, put the largest pieces on one end of the tray and the smallest on the other, then check them separately. You can also bake the fish on its own lined tray while the kūmara finishes. This gives you more room to remove portions as soon as each reaches the safe temperature.
Storage and Reheating
Refrigerate cooked salmon and vegetables within 2 hours of cooking, preferably in shallow, airtight containers. Keep the yoghurt sauce in a separate covered container so it stays cool and does not make the vegetables damp. The cooked meal keeps for 3 to 4 days in the refrigerator. If the room is very warm, do not leave the food sitting out while serving; pack leftovers promptly.
For longer storage, freeze the cooked salmon and kūmara in airtight freezer-safe containers for up to 2 months for best quality. The texture of the fish may be a little softer after thawing, and the yoghurt sauce is better made fresh rather than frozen. Thaw frozen portions overnight in the refrigerator, not on the counter.
Reheat leftovers covered in a 300°F (150°C) oven until the centre reaches 165°F (74°C), checking with a food thermometer. A microwave also works: heat in short bursts at medium power, turning or rearranging the food where possible, until it reaches 165°F (74°C). Gentle heating helps limit drying, but do not stop before leftovers are safely hot throughout. Add the sauce after reheating.
Frequently Asked Questions
Can I use frozen salmon fillets?
Yes. Thaw them overnight in the refrigerator, then pat them dry before adding the seasoning. If you need to cook from frozen, follow the package directions where available and expect a longer cooking time; the thickest part still needs to reach 145°F (63°C). Do not rely on the 15-minute timing in this recipe for frozen fish.
Should I remove the salmon skin?
No, it is optional. Skin-on fillets can be roasted skin-side down, and the skin helps protect the underside from direct heat. If you do not enjoy eating it, the cooked flesh usually lifts away from the skin easily when served. Skinless fillets work just as well; check them carefully because the exposed underside can cook a little faster.
How can I tell when salmon is done without drying it out?
Use a food thermometer in the thickest part and cook to the USDA FSIS safe minimum of 145°F (63°C). Colour and flaking can help you judge texture, but they are less dependable than a thermometer, particularly with thick or uneven fillets. Start checking at 12 minutes if your portions are thin, and return the tray to the oven in short intervals if needed.
Can I prepare any parts ahead?
Yes. Cut the kūmara and trim the beans earlier in the day, then keep them covered in the refrigerator. Mix the mustard and herb coating shortly before cooking, or prepare it up to a day ahead and refrigerate it. For the best texture, season the salmon just before it goes into the oven rather than leaving it coated for hours.
What can I use instead of kūmara?
Orange sweet potato is the closest easy substitute and roasts in much the same way when cut into similarly sized cubes. Regular potatoes are less sweet and may need a few extra minutes, depending on their variety and size. Whichever vegetable you choose, check tenderness before adding the salmon so its cooking time does not dictate whether the vegetables are ready.
Can I make this recipe without an oven?
You can cook the kūmara in an air fryer or roast it in a covered skillet, though you may need to work in batches. Pan-cook the seasoned salmon separately over medium heat, adjusting for thickness and checking the centre with a thermometer for 145°F (63°C). Steam the green beans as directed. The timings will differ, so use doneness rather than the oven schedule as your guide.
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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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