Sous Vide Swordfish with Caper–Garlic Brown Butter, Roasted Fall Vegetables, and Green Beans

Sous Vide Swordfish

Gentle cooking limits moisture loss in lean swordfish. A brief, hot sear adds a browned surface without requiring a long pan cook.

Ingredients

• 4 steaks swordfish, 6–7 ounces each and 1–1¼ inches thick, skin removed
• 1 teaspoon kosher salt, or to taste
• ½ teaspoon freshly ground black pepper
• 1 tablespoon ghee
• ¼ cup roughly chopped flat-leaf parsley, for finishing

Instructions

1. Heat a sous vide bath to 140°F / 60°C. Season the swordfish with salt and pepper and seal in suitable cooking bags in a single layer.
2. Submerge fully and cook for 45–60 minutes, using the longer time for thicker steaks. This bath stage is not a substitute for checking the final internal temperature.
3. Remove the fish from the bags, discard the liquid, and pat the steaks thoroughly dry.
4. Heat the ghee in a large skillet over medium-high heat. Sear the swordfish for about 45–60 seconds per side, working in batches so the pan stays hot.
5. Check the center with an instant-read thermometer. If needed, lower the heat and continue cooking briefly until the fish reaches 145°F / 63°C; it should be opaque and moist rather than translucent.
6. Rest for 2 minutes, then cut into broad slices. Finish with the caper–garlic brown butter and parsley at serving.

Notes

• Buy steaks of similar thickness so they cook evenly.
• Swordfish is a high-mercury fish and is not recommended for pregnant or breastfeeding people or young children.

Caper–Garlic Brown Butter

Browned milk solids give the lean fish richness, while capers and lemon keep the sauce lively. Adding garlic after browning the butter prevents it from burning.

Ingredients

• 8 tablespoons unsalted butter, cut into pieces
• 3 cloves garlic, finely chopped
• 3 tablespoons capers, drained and patted dry
• 1½ tablespoons fresh lemon juice, plus more to taste
• 1 tablespoon water
• to taste kosher salt and freshly ground black pepper

Instructions

1. Melt the butter in a small light-colored saucepan over medium heat. Cook, swirling often, until the foam subsides and the milk solids turn hazelnut brown, about 4–6 minutes.
2. Immediately lower the heat and add the garlic and capers. Stir for 30–60 seconds, just until the garlic is fragrant and lightly golden.
3. Remove from the heat. Carefully stir in the lemon juice and water; the butter will sputter. Swirl to combine.
4. Taste before adding salt, since the capers supply plenty. Add pepper and more lemon if needed.
5. Reserve about one-third of the sauce for the green beans and use the rest over the swordfish.

Notes

• If the sauce tastes overly rich or salty, add a teaspoon or two of warm water and a small squeeze of lemon.
• Keep warm off direct heat and swirl before spooning; this is a loose butter sauce, not a thick emulsion.

Roasted Fall Vegetable Medley

Staggered roasting gives dense potatoes time to soften while preserving texture in the broccoli and Brussels sprouts. Plenty of tray space creates browned edges instead of steamed vegetables.

Ingredients

• 12 ounces small purple potatoes, cut into ¾-inch pieces
• 1 small delicata squash, seeded and cut into ½-inch half-moons
• 8 ounces Brussels sprouts, trimmed and halved
• 8 ounces broccoli, cut into large florets
• 6 ounces cremini mushrooms, halved or quartered
• 3 tablespoons olive oil, divided
• 1 teaspoon kosher salt, or to taste
• ½ teaspoon freshly ground black pepper
• 2 teaspoons fresh lemon juice

Instructions

1. Heat the oven to 425°F / 220°C with racks in the upper and lower thirds. Set out two large rimmed baking sheets.
2. Toss the potatoes with 1 tablespoon olive oil and some of the salt and pepper. Spread on one sheet and roast for 10 minutes.
3. Toss the squash, Brussels sprouts, and mushrooms with 1½ tablespoons olive oil and more salt and pepper. Divide between the sheets, keeping cut surfaces against the metal and avoiding crowding.
4. Roast for 15 minutes. Toss the broccoli with the remaining ½ tablespoon oil and seasoning, then add it wherever there is space.
5. Roast for another 10–15 minutes, rotating the trays and turning vegetables as needed. The potatoes should be tender in the center, the squash browned but intact, and the green vegetables crisp at the edges.
6. Remove individual vegetables early if they finish ahead of the others. Combine on a warm platter and sprinkle with lemon juice.

Notes

• Delicata skin is edible; scrub it well and leave it on.
• Use a third tray if necessary rather than packing the vegetables tightly.

Green Beans with Extra Caper–Garlic Brown Butter

Simply cooked beans provide a fresh, snappy contrast to the roasted vegetables. Dressing them with the same butter ties the whole plate together.

Ingredients

• 1 pound green beans, stem ends trimmed
• as needed salt for the cooking water
• ⅓ batch Caper–Garlic Brown Butter, reserved from the sauce component

Instructions

1. Bring a large saucepan of salted water to a boil.
2. Add the beans and cook for 4–6 minutes, until bright green and tender with a little snap. Begin checking thinner beans earlier.
3. Drain thoroughly and let steam-dry for 30 seconds so water does not dilute the sauce.
4. Toss with the reserved warm caper–garlic brown butter and serve immediately.

Notes

• For advance preparation, blanch slightly short of done, chill in ice water, and drain. Rewarm briefly in boiling water before drying and dressing.

Overall Timing / Workflow

The sous vide bath provides a reliable cooking window for roasting the vegetables. Leaving the sear, sauce, and beans until the end keeps the plate hot and the textures distinct.

Instructions

1. 0:00 — Heat the sous vide bath and oven. Season and bag the fish; start it as soon as the bath reaches temperature.
2. 0:10 — Cut the vegetables and start roasting the potatoes.
3. 0:20 — Add the squash, Brussels sprouts, and mushrooms to the oven.
4. 0:35 — Add the broccoli. Bring the bean water to a boil and prepare the garlic, capers, lemon, and parsley.
5. 0:45 — Check the vegetables and make the brown butter. Keep the sauce warm off heat.
6. 0:55 — When the swordfish has completed its bath time, dry it thoroughly. Cook and drain the beans while searing the fish, then verify the fish reaches 145°F / 63°C.
7. 1:05–1:15 — Dress the beans, slice the fish, and serve everything on warm plates.

Notes

• Allow extra time for equipment preheating. If the fish needs the full 60-minute bath, hold finished roasted vegetables in a low oven for a few minutes.

Plating

Separate clusters preserve the contrast between juicy fish, sauced beans, and dry-roasted vegetables.

Instructions

1. Arrange broad slices of swordfish on one side of each warm plate.
2. Spoon the brown butter, capers, and garlic over the fish, then scatter with chopped parsley.
3. Place the green beans alongside and mound the roasted vegetables separately, leaving their browned surfaces exposed.

Leftover Path

Gentle reheating protects lean swordfish from drying out, while reheating the roasted vegetables separately restores their edges.

Instructions

1. Refrigerate the fish, vegetables, beans, and remaining sauce in separate covered containers within 2 hours. Use within 3 days.
2. Reheat roasted vegetables in a 400°F / 205°C oven for 10–15 minutes. Warm beans briefly in a covered skillet with a splash of water.
3. For a cold leftover meal, flake the chilled fish over the vegetables and beans and dress lightly with lemon and olive oil.
4. For hot leftovers, warm the fish covered with a splash of water until it reaches 165°F / 74°C, stopping promptly to limit drying. Warm the butter sauce separately over low heat and spoon over at the end.