Roasted Fish With Leeks and Olive Salsa Verde
Published April 14, 2022

- Total Time
- 30 minutes
- Rating
- Comments
- Read comments
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Ingredients
- 4thick fillets white fish, such as cod or halibut (about 1½ pounds total)
- Salt and freshly ground black pepper
- 3medium leeks, trimmed, white and light green parts halved lengthwise and rinsed well
- Extra-virgin olive oil
- 1lemon
- ½cup coarsely chopped pitted Castelvetrano olives
- ½cup chopped cilantro leaves and tender stems
- 1garlic clove, finely grated, minced or pushed through a garlic press
- Large pinch of red-pepper flakes, or to taste
- Fine sea or table salt
- ⅓cup extra-virgin olive oil
For the Fish and Leeks
For the Olive Salsa Verde
Preparation
- Step 1
Heat oven to 425 degrees. Season fish all over with salt and pepper, and set aside while you prepare the leeks.
- Step 2
Cut the leeks into matchsticks: Place a leek half, flat side down, on a cutting board and cut it in half crosswise. Then slice the pieces lengthwise into thin (¼-inch-thick) matchsticks. Repeat with remaining leeks.
- Step 3
Spread leeks out on a rimmed baking sheet. Lightly drizzle them with oil and a pinch of salt and pepper, and toss to coat. Push aside the leeks to create 4 spaces in the center of the sheet pan just large enough for the fish fillets, then place the fillets in those cleared spaces. (Avoid putting the fish on top of the leeks, which won’t cook as well if they’re covered.)
- Step 4
Drizzle fish with oil. Roast until the fish is opaque and just cooked through but not yet flaky, about 10 to 15 minutes, depending on the thickness of fish. The leeks surrounding the fish will be soft and silky, while those at the edges of the pan may turn delightfully brown and crisp in spots. If the fish is done but you think the leeks need a little more time, transfer the fish to a serving platter, tent with foil to keep warm, and continue to cook the leeks for another few minutes.
- Step 5
While the fish is in the oven, make the salsa verde: Using a fine rasp grater, grate ½ teaspoon lemon zest into a small bowl. Halve the lemon and squeeze in 1 tablespoon juice.
- Step 6
Stir in olives, cilantro, garlic, red-pepper flakes and a pinch of salt. Slowly drizzle in oil, stirring to combine. Taste and add more salt, red-pepper or another squeeze of lemon, if needed.
- Step 7
Place fish on plates and surround with leeks. Top with olive salsa verde.
Private Notes
Comments
A more refined (and traditional Italian) way of getting garlic flavor in the salsa is to soak a crushed clove in the salted lemon juice for 15 mins or so, then discard it. This avoids having to actually eat raw garlic, which is overpowering and (according to 60 million Italians) will keep you awake all night.
I would definitely make this again but would chop the leeks into rings rather than matchsticks. As written, the matchsticks came out fibrous/chewy even though I cooked them longer than the fish (and the fish got cold while I waited). Cutting them into rings would help break up the long fibers in the Leeks. The olive salsa is delicious.
A tip on rinsing leeks: I cut them (half-rounds, matchsticks, whatever), rinse them in the basket of a salad spinner, and give them a little spin. Leeks prepared this way can also be frozen: spread on a sheet pan in a single layer, frozen, then scooped into a freezer bag. Not as good as fresh, but handy in cooked dishes when fresh are not at hand.
Used halibut that was on sale. Super easy preparation. Wife and daughter loved it. Only recommendation would be to add something else to the salsa. Olives were good but it ate cilantro- heavy and could use another layer of flavor. Would gravitate toward jalapenos or serrano.
Did anyone add the salsa to roast with the fish in the oven? Please LMK, I'm curious
Great concept, but I found the salsa a bit lacking in flavor. It needed a punch- maybe using a more briney olive? But the overall dish was good and it felt really healthy to eat. I’ll make it again.
