Braised Lamb without meat

4 2-inch-thick lamb shoulder-blade chops (about 4 3/4 pounds total) 3 tablespoons butter 2 tablespoons olive oil 2 large red onions, coarsely chopped 6 large[...]

4 3/4- to 1-pound lamb shanks 2 tablespoons vegetable oil 4 tablespoons (1/2 stick) butter 1 1/2cups chopped onion 1 cup chopped carrots 1 cup chopped[...]