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Perfect Rack of Lamb Recipe with Herb Dijon Crust and Garlic Mashed Potatoes Made Easy

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A simple yet elegant rack of lamb with a tangy herb Dijon crust paired with creamy roasted garlic mashed potatoes, perfect for special occasions or cozy dinners.

Ingredients

Scale
  • 1 rack of lamb (about 8 ribs, 1.5 to 2 pounds / 680–900 grams), frenched and trimmed
  • 2 tablespoons Dijon mustard
  • 2 tablespoons fresh rosemary, finely chopped
  • 2 tablespoons fresh thyme leaves, chopped
  • 3 cloves garlic, minced
  • Salt and freshly ground black pepper, to taste
  • 2 tablespoons olive oil (extra virgin)
  • 4 large Yukon Gold potatoes (about 2 pounds / 900 grams), peeled and quartered
  • 1 whole head of garlic
  • 3 tablespoons unsalted butter, softened
  • 1/2 cup whole milk or cream (120 ml)
  • Salt and pepper, to taste
  • Fresh chives or parsley, finely chopped for garnish (optional)

Instructions

  1. Preheat the oven to 400°F (200°C). Cut the top off the whole head of garlic, drizzle with a teaspoon of olive oil, wrap in foil, and roast for 30-35 minutes until soft and golden.
  2. Pat the rack of lamb dry. Season generously with salt and black pepper. Mix Dijon mustard, minced garlic, chopped rosemary, thyme, and olive oil in a small bowl.
  3. Brush the Dijon herb mixture evenly over the entire rack. Let it sit at room temperature for 15 minutes.
  4. Place peeled and quartered potatoes in a large pot, cover with cold water, add a pinch of salt, bring to a boil, and simmer for 15-20 minutes until tender.
  5. Heat a cast iron skillet or oven-safe pan over medium-high heat. Sear the rack fat side down for 2-3 minutes until browned, then flip and sear the other side for 2 minutes.
  6. Transfer the skillet to the oven or place the rack on a roasting pan. Roast for 15-20 minutes for medium-rare (130-135°F internal temperature). Remove and tent with foil. Rest for 10 minutes.
  7. Drain potatoes and return to pot over low heat for 1-2 minutes to dry excess moisture. Squeeze roasted garlic cloves out of skins and mash into potatoes. Add butter, warm milk or cream, salt, and pepper. Mash until smooth.
  8. Slice the rack into individual chops and serve with roasted garlic mashed potatoes. Garnish with fresh herbs if desired.

Notes

Rest the lamb after roasting to lock in juices and ensure neat slicing. Use an instant-read thermometer for perfect doneness. Roasting garlic mellows its sharpness and adds sweetness. Searing the lamb before roasting creates a flavorful crust. Season generously with salt before cooking. Leftovers can be stored separately in airtight containers for up to 3 days and reheated gently.

Nutrition

Keywords: rack of lamb, herb Dijon crust, roasted garlic mashed potatoes, easy lamb recipe, special occasion dinner, cozy dinner, lamb chops, garlic mashed potatoes

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