Mint And Cumin Spiced Lamb Chops

Name: Mint And Cumin-Spiced Lamb Chops
Ingredients: 2 medium onions, peeled, quartered; 1 cup fresh cilantro leaves with tender stems; 1 cup fresh flat-leaf parsley leaves with tender stems; 1 cup fresh mint leaves; 1 tablespoon ground cumin; 1 tablespoon paprika; 2 teaspoons allspice; 1 teaspoon crushed red pepper flakes; 1 teaspoon ras-el-hanout or garam masala; Kosher salt; 24 untrimmed lamb rib chops (about 5 lb.); Vegetable oil (for grilling)