Rosemary Rack of Lamb With Crushed Potatoes

Preparation

1. Step 1

   Bring a large pot of salted water to a boil. Season lamb generously with salt and pepper. In a small bowl, mix together Dijon mustard, garlic and anchovy (or pound together in a mortar for a smoother texture). Stir in 3 tablespoons olive oil. Smear lamb all over with marinade and set aside.

2. Step 2

   Meanwhile, boil potatoes until the tip of a paring knife meets no resistance, 10 to 15 minutes depending on size. When potatoes are done, drain, transfer to a roasting pan large enough to hold them in a single layer, and set aside to cool.

3. Step 3

   Heat oven to 400 degrees. With palms or the back of a wooden spoon, crush potatoes gently to crack open and slightly flatten. Sprinkle with salt, drizzle with about 2 tablespoons olive oil, and turn to lightly coat.

4. Step 4

   Lay lamb racks on top of potatoes, with bones curving downward. Scatter rosemary over meat and potatoes. Roast, uncovered, until a meat thermometer registers 125 degrees (for medium-rare), about 20 minutes. (Cook to 135 degrees for medium.)

5. Step 5

   Remove lamb to a cutting board and let rest, tented with foil. Return potatoes to oven and leave to roast 10 to 15 minutes more, until nicely crisped.

6. Step 6

   Use a large chef's knife to slice the racks by cutting between the bones. (One rack will yield 4 thick chops or 8 thin ones). Transfer chops and potatoes to a warm platter, sprinkle with parsley and serve.