Second-half goals from Danny Hylton and Luke Berry earned League Two leaders Luton their third successive win at struggling Crewe.
After struggling to break down the hosts, the Hatters made it count with two goals inside four minutes after the break, although an own goal by Johnny Mullins set up a tense finish.
Luton thought they were ahead when striker Elliott Lee headed brother Olly's cross home at the far post, only for the effort to be chalked off for a push.
Fuelled by a midweek win at Morecambe, Crewe were not without a threat, George Cooper firing a rising effort at Luton keeper Marek Stech, who also saved at his near post fromChris Dagnall.
Olly Lee then skied over after Crewe keeper Dave Richards spilled a routine cross. Yet Luton were ahead soon after when Elliott Lee pulled bsack from the by-line and Hylton smashed in off the underside of the bar.
Berry then doubled the lead four minutes later when he drilled home after substitute Andrew Shinnie charged down Brad Walker's clearance and squared the ball across the box.
But Crewe cut the lead in the 81st minute when Eddie Nolan's cross was diverted past Stech by defender Mullins.
Report supplied by the Press Association
