aim and his shot bobbled past King and into the corner of the net. Bebe deserved to extend the lead further after a solo run took him through the home defence but he prodded wide. Macheda and Henriquez, on the hour mark, also had decent efforts but a third goal was not forthcoming.
The Hatters made a fight of it by pulling a goal back eight minutes from time when Eckersley headed in at the near post following a short-corner routine, which had been conceded by Blackett diving to head over his own bar.
However, United made it three wins out of three in the competition to continue an unbeaten start to the campaign for Joyce's team ahead of another Barclays Under-21 Premier League outing at Tottenham on Saturday.
United: Sutherland; Vermijl, Wootton, Blackett, James; Bebe, Ekangamene, Powell (Hendrie 39), Januzaj (McCullough 89); Henriquez, Macheda (Lawrence 77). Subs not used: O'Hara, Veseli.