Leg of Lamb with Rice & Onion Puree

A Sunday-supper roast leg of lamb done the French country way: garlic slivers pushed into holes poked through the meat, the lamb roasted on a bed of sliced onions and thyme that catches every drop of rendered fat and juice, then those onions blended with cooked rice and cream into a savory puree served alongside.

The bed of onions is the clever architectural move. Ten sliced onions might seem like a lot, but they collapse during the roast and soak up everything the lamb drips: fat, garlic, thyme, meat juices. By the time the lamb is resting, the onions are meltingly soft and deeply flavored, ready to be scraped into a food processor with a couple of cups of cooked rice, cream, and a hit of fresh nutmeg for a lumpy-smooth puree that works as side dish, sauce, and starch all at once.

The two-stage roast is a French technique worth learning. Start fat-side-down for the first hour so the fat bastes the meat from below while the top forms a crust. Flip fat-side-up for the final 20 to 30 minutes to render the cap and brown the surface. Twenty minutes per pound brings you to medium-rare internal temperature.

Chef Tips

• Stud the lamb at least an hour before roasting so the garlic flavor penetrates the meat, not just sits on top.
• Use a meat thermometer. Medium-rare lamb is 130°F (54°C) internal, medium is 140°F (60°C). Overcooking turns leg of lamb chewy fast.
• Rest the lamb 15 minutes, tented loosely with foil. Slicing early loses all the juice to the cutting board.
• Slice against the grain in thin pieces. Leg of lamb has long muscle fibers that go rubbery if cut with the grain.

Variations

• Stud with rosemary sprigs alongside the garlic for more aromatic depth.
• Add peeled whole shallots and carrots to the onion bed for a full one-pan dinner.
• Serve with mint sauce, chimichurri, or a simple red wine reduction alongside the onion-rice puree.