Salmon baked on fennel and orange, the way I’d serve it

A mate of mine who runs a fish shop out past Swansea once told me the biggest mistake home cooks make with salmon is treating it like it needs rescuing. Sauces, crusts, marinades thick enough to stand a spoon in. He’s not wrong. Good Tasmanian or Victorian ocean trout salmon doesn’t need saving, it needs a hot oven, a bit of restraint, and something underneath it that can handle the heat without turning to mush. Fennel and orange does exactly that, and it’s been one of my go-to combinations for longer than I’d like to admit.

This is a salmon baked on fennel and orange recipe, and it’s about as straightforward as seafood dinners get. No fiddly reductions, no twelve-ingredient marinade. You slice, you layer, you bake. The fennel softens and turns faintly sweet, the orange adds a sharpness that cuts through the richness of the fish, and the whole tray does most of the work while you’re setting the table.

Why this combination actually earns its place

Fennel on its own can be a bit assertive, that aniseed note isn’t to everyone’s taste straight up, but roasted under salmon it mellows right out. The orange does two jobs: it adds acid, which salmon needs more than people realise, and the juice that pools in the tray while baking keeps the fennel from drying out. You end up with a base that’s part side dish, part sauce, without any extra pots to wash.

I’ll be honest, I used to skip the orange zest step because it felt fussy for a weeknight. That was a mistake. The zest carries more aromatic oil than the juice does, and leaving it out is the difference between a dish that tastes finished and one that tastes like it’s missing something. Don’t skip it just because you’re in a hurry.

What you need and why

Buy the thickest fillets you can find, tail-end pieces cook unevenly and you’ll end up with one end dry and the other barely warmed through. A fishmonger worth his salt will cut you centre-cut pieces if you ask, and most Harris Farm or independent fish counters around Sydney and Newcastle will do it without a fuss.

• 2 bulbs fennel, trimmed, fronds reserved, thinly sliced
• 2 oranges, 1 thinly sliced into rounds, 1 juiced and zested
• 4 salmon fillets, skin on, about 180g each, centre-cut
• 3 tbsp extra virgin olive oil
• 2 cloves garlic, thinly sliced
• 1 tsp fennel seeds, lightly crushed
• Sea salt flakes and cracked black pepper
• 1 small red onion, thinly sliced
• A small handful of flat-leaf parsley, roughly chopped
• Lemon wedges, to serve

Method

1. Preheat your oven to 200°C (fan-forced 180°C). Get it properly up to temperature before the tray goes in, a lukewarm oven is how you end up with steamed fish instead of baked.
2. In a roasting dish, toss the sliced fennel, red onion and garlic with 2 tablespoons of the olive oil, the crushed fennel seeds, a good pinch of salt and the orange zest. Spread it out in an even layer.
3. Roast the fennel mixture alone for 15 minutes, until it’s starting to soften and the edges are catching a bit of colour.
4. Pull the tray out and tuck the orange slices through the fennel. Pour over the orange juice.
5. Pat the salmon fillets dry with paper towel, season both sides with salt and pepper, and lay them skin-side down on top of the fennel and orange. Drizzle with the remaining olive oil.
6. Bake for a further 12 to 14 minutes, depending on thickness, until the salmon just flakes when pressed at the thickest point. It should still look faintly glossy in the centre, not grey all the way through.
7. Rest for 2 minutes on the tray, scatter over the reserved fennel fronds and parsley, and serve straight from the dish with lemon wedges on the side.

Serves 4. Prep 15 minutes, cook around 30 minutes total.

Getting the timing right

The one place people go wrong is rushing the fennel. If it goes in underdone, it never catches up to the salmon, and you end up with crunchy fennel sitting under perfectly cooked fish, which isn’t the idea at all. Fifteen minutes on its own first is non-negotiable. After that, the salmon’s actual cooking time depends entirely on thickness, so don’t just set a timer and walk off. Check it. A fillet around 2.5cm thick wants closer to twelve minutes, anything thicker needs the full fourteen, maybe a touch more.

If you’re nervous about overcooking, which plenty of people are, pull it a minute early and let the residual heat finish the job while it rests. Salmon keeps cooking after it leaves the oven, same as a good steak does off a one-pan chicken with fennel, olives and lemon tray. That’s a dish I come back to often enough that I probably don’t need to keep mentioning it, but there it is.

A serving idea that doesn’t fight the dish

I keep this one simple on the side. A green salad with a sharp vinaigrette works, or if you want something with a bit more substance, serve it alongside a big bowl of something green and leafy rather than another starch competing for attention. If you’re after inspiration on how to make vegetables the main event rather than an afterthought, I’ve written about that approach over at making vegetables the default, not the side, and the same logic applies here. The fennel tray is already doing vegetable duty, so don’t pile on a heavy potato bake as well. A bit of crusty sourdough to mop up the pan juices is as far as I’d go.

A variation worth trying

Swap the orange for blood orange when they’re in season through winter, the colour alone makes the dish look like you’ve tried harder than you have. You can also add a handful of kalamata olives to the fennel mixture before it goes in the oven, which brings a saltiness that plays well against the sweetness of the roasted citrus. What I wouldn’t do is add a cream sauce on top, I’ve seen people try it and it just drowns out everything the fennel and orange are doing. Some dishes don’t need rescuing either.

On buying salmon that’s actually worth cooking

Most of what’s sold as Australian salmon comes from Tasmanian aquaculture, and the quality varies more than people expect. Look for fillets with firm flesh, no grey patches near the skin, and a clean smell, not a fishy one. If it smells like low tide, walk away. The Australian Government’s eatforhealth.gov.au guidelines recommend oily fish like salmon a couple of times a week as part of a balanced diet, which gives you a decent excuse to make this one a regular rather than a special-occasion dish.

For anyone managing cholesterol or blood pressure, the omega-3 content in salmon is worth knowing about beyond just taste. Betterhealth.vic.gov.au has solid, practical detail on oily fish and heart health if you want the fuller picture rather than taking my word for it.

Where this fits in the week

I’ll put this on the table on a Tuesday as readily as a Sunday. It’s quick enough for a weeknight once you’ve got the method down, but it looks considered enough that I’ve served it to people I was trying to impress without feeling like I’d cut corners. That’s the mark of a good recipe in my book, not that it’s complicated, just that it doesn’t apologise for being simple. If you’re building out a rotation of easy weeknight dinners, this sits nicely alongside the miso-glazed salmon with greens I wrote up a while back, and it’s worth having both in the rotation so you’re not eating the same thing every week.

Get your pan, or in this case your tray, properly hot before the fennel goes in, trust the orange zest, and don’t crowd the dish with extras it doesn’t need. That’s the whole trick, really.

– Dave Forsythe, Golden Door Living kitchen