Sous Vide Lamb with Basil-Mint Pesto, Corn on the Cob, and Zucchini with Onions

Tender sliced lamb gets a generous spoonful of coarse basil-mint pesto, bright with lemon and rich with toasted almonds. Sweet corn and deeply browned zucchini with onions make this a late-summer plate worth lingering over.

By Jonathan Katzman · Cooked and photographed · Recipe updated

Serves: 4 servings

Tags: gluten-free

Sous Vide Lamb with Basil-Mint Pesto, Corn on the Cob, and Zucchini with Onions

Sous Vide Lamb

Sous vide cooking keeps the lean lamb evenly cooked, while a dry surface and very hot pan give it a browned crust without overcooking the center.

Ingredients

  • 2 lb boneless lamb leg, trimmed and divided into pieces no thicker than 2 inches
  • 2 tsp Diamond Crystal kosher salt, or 1 teaspoon fine sea salt
  • 1 tsp freshly ground black pepper
  • 1 tbsp ghee

Instructions

  1. Heat a sous vide bath to 138°F / 59°C for medium lamb.
  2. Season the lamb with salt and pepper. Arrange in a vacuum bag in a single layer and seal, or use a suitable freezer bag with the water-displacement method.
  3. Submerge fully and cook for 5 hours, keeping the pieces separated rather than stacked.
  4. Remove the lamb from the bag, discard the liquid, and pat the meat thoroughly dry. Let the surface air-dry for 5 minutes while heating a heavy skillet.
  5. Heat the ghee over high heat until shimmering. Sear the lamb for 45–60 seconds on each broad side and briefly on the edges, working in batches so the pan stays hot.
  6. Rest for 3 minutes, then slice thinly across the grain. The center should be evenly rosy and the exterior well browned.

Notes

  • The cooking time is for refrigerator-cold pieces no thicker than 2 inches; do not apply it unchanged to a whole thick roast.
  • For make-ahead cooking, chill the sealed bag promptly in an ice-water bath until cold, then refrigerate. Rewarm in the water bath before drying and searing.

Basil-Mint Pesto

Mint lifts the richness of the lamb, basil adds sweetness, and toasted almonds give the pesto a coarse texture that clings to the slices.

Ingredients

  • 1 1/2 cups loosely packed basil leaves
  • 1/2 cup loosely packed mint leaves
  • 1/4 cup raw almonds
  • 1 small clove garlic, chopped
  • 1 tsp finely grated lemon zest
  • 1 1/2 tbsp fresh lemon juice
  • 1/3 cup extra-virgin olive oil
  • 1/4 tsp fine sea salt, plus more to taste

Instructions

  1. Toast the almonds in a dry skillet over medium-low heat for 4–5 minutes, stirring, until fragrant and lightly golden. Cool completely.
  2. Pulse the almonds and garlic in a small food processor until coarsely chopped.
  3. Add the basil, mint, lemon zest, lemon juice, and salt. Pulse, scraping down the bowl, until the herbs are finely chopped but not puréed.
  4. Pulse in the olive oil just until combined. Taste and adjust the salt and lemon; the pesto should be bright, spoonable, and visibly textured.

Notes

  • If too stiff, stir in a teaspoon or two of cold water rather than enough extra oil to make it greasy.
  • Keep covered and cool until serving; bring to room temperature before spooning over the lamb.

Buttered Corn on the Cob

Brief boiling keeps fresh corn juicy and sweet, providing a simple contrast to the savory lamb and herb sauce.

Ingredients

  • 4 ears fresh bicolor sweet corn, husks and silk removed
  • 2 tbsp unsalted butter
  • to taste fine sea salt

Instructions

  1. Bring a wide pot of water to a boil. Add the corn and cook for 4–6 minutes, turning as needed, until the kernels are bright, plump, and tender-crisp.
  2. Drain well and rub each hot ear with butter. Season lightly with salt and serve whole.

Notes

  • Very fresh, tender corn may need only 3–4 minutes; avoid prolonged boiling.

Pan-Browned Zucchini and Onions

Cooking in stages lets the zucchini develop browned faces without steaming, while the onions become sweet and supple.

Ingredients

  • 1 1/2 lb medium zucchini, cut into 1/2-inch rounds
  • 1 large yellow onion, thinly sliced
  • 2 tbsp ghee, divided
  • 1 tsp fresh lemon juice
  • 1/2 tsp fine sea salt, plus more to taste
  • 1/4 tsp freshly ground black pepper

Instructions

  1. Pat the zucchini dry. Heat 1 tablespoon ghee in a wide skillet over medium heat.
  2. Add the onion and a pinch of the salt. Cook for 8–10 minutes, stirring occasionally, until softened with golden edges. Transfer to a bowl.
  3. Increase the heat to medium-high. Add the remaining ghee and cook the zucchini in uncrowded batches, leaving each round undisturbed for 2–3 minutes per side until browned and just tender.
  4. Return all the zucchini and onions to the pan. Add the remaining salt and pepper and toss over medium heat for 1 minute.
  5. Remove from the heat, add the lemon juice, and taste for seasoning. Keep the zucchini intact rather than cooking it until collapsed.

Notes

  • Use two skillets if available to shorten cooking time and keep the zucchini from steaming.

Overall Timing / Workflow

The lamb cooks unattended while the pesto and sides are prepared. Searing at the end keeps the meat's crust fresh.

Instructions

  1. About 5 1/2 hours before serving, heat the water bath, season and bag the lamb, and begin its 5-hour cook.
  2. During the lamb's cooking time, toast the almonds and make the pesto. Refrigerate covered if making it more than an hour ahead.
  3. About 35 minutes before serving, slice the vegetables and shuck the corn. Start heating the corn water.
  4. About 25 minutes before serving, cook the onions and zucchini. Bring the pesto to room temperature.
  5. When the lamb finishes, remove it from the bag and dry it thoroughly. Keep the vegetables warm over very low heat.
  6. Boil the corn while searing the lamb in a separate skillet. Butter the corn, slice the lamb after its brief rest, and plate immediately.

Plating

Keeping the pesto on the lamb leaves the corn and browned vegetables distinct, with contrasting textures in every part of the plate.

Ingredients

  • 4 food-safe nasturtium blossoms, optional

Instructions

  1. Arrange sliced lamb in a loose fan on each warm plate and spoon the basil-mint pesto over part of the meat.
  2. Add a mound of zucchini and onions beside the lamb, then lay a whole ear of corn diagonally across the plate.
  3. If using, place a nasturtium blossom beside the vegetables. Serve any remaining pesto at the table.

Notes

  • Use only edible flowers grown for culinary use, not florist flowers.

Leftover Path

Storing the pesto separately preserves its fresh flavor, and gentle reheating prevents the lean lamb from drying out.

Instructions

  1. Refrigerate the cooked lamb, vegetables, corn, and pesto in separate covered containers within 2 hours of serving. Use the lamb and vegetables within 3–4 days and the pesto within 3 days.
  2. Serve leftover lamb cold and thinly sliced, or warm it gently in a covered skillet with a splash of water over low heat until just hot.
  3. Cut leftover corn from the cob and warm it with the zucchini and onions. Serve alongside the lamb and add the pesto after reheating.