After that series , she went on to present two cookery series called Nigella 's Christmas Kitchen and Nigella Express on BBC2 .
Lawson hosted the Food Network 's Nigella Feasts in the United States in 2006 followed by a three-part BBC Two series , Nigella 's Christmas Kitchen , in the United Kingdom . This led to the commissioning of Nigella Express on BBC Two in 2007 .