CARDAMOM-SCENTED LAMB WITH MASHED SWEET POTATOES

Cardamom-Scented Lamb with Mashed Sweet Potatoes image

Yield Makes 4 servings

Number Of Ingredients 15

Sauce
1 tablespoon butter
2 tablespoons tomato paste
6 garlic cloves, minced
2 teaspoons chopped fresh thyme
2 cups dry red wine
1 cup canned beef broth
1 cup canned low-salt chicken broth
Lamb
2 tablespoons shelled cardamom seeds
2 1 1/4- to 1 1/2-pound racks of lamb, trimmed
2 tablespoons olive oil
1/4 cup (1/2 stick) chilled unsalted butter, cut into pieces
4 teaspoons coarse-grained mustard
Mashed Sweet Potatoes with Maple Syrup

Steps:

For sauce:
Melt 1 tablespoon butter in heavy medium saucepan over medium-high heat. Add tomato paste, garlic and thyme; sauté 1 minute. Add wine and boil until reduced by half, about 8 minutes. Add both broths; boil until reduced to 1 1/4 cups, about 10 minutes. (Can be made 1 day ahead. Cover and refrigerate.)
For lamb:
Preheat oven to 450 °F. Toast cardamom seeds in heavy small skillet over medium heat until fragrant, about 2 minutes. Cool. Transfer to spice grinder; grind coarsely.
Sprinkle lamb with cardamom, salt and pepper. Heat oil in heavy large skillet over high heat. Add 1 lamb rack; sear until brown, turning occasionally, about 6 minutes. Transfer lamb, meat side up, to baking sheet. Repeat with second lamb rack. Roast until meat thermometer inserted into center registers 125°F for medium-rare, about 18 minutes. Let stand 5 minutes. Cut lamb between bones into chops.
Bring sauce to simmer. Reduce heat to low. Add butter and mustard; whisk just until butter melts. Season with pepper. Spoon sauce onto plates. Top with sweet potatoes and lamb and serve.