Tunde Bayode’s second goal of the season capped an impressive performance from a youthful Burnley side as they rediscovered the winning thread in the Professional Development League.
Michael Duff’s young charges secured only a third league win of the campaign and a second since Bayode struck his opening goal back in August.
But the Clarets are now unbeaten in four games as they continued their solid run in league and cup.
Their last outing at the Tameside Stadium had brought them a 4-0 Premier League Cup win over Colchester when Nahki Wells scored as hat-trick.
There were no senior players on show this time but a mix of scholars and first-year professionals – with the exception of 20-year-old Jamie Thomas – stepped up to deliver the goods against an equally inexperienced Barnsley side.
Second-year scholars James Clarke and Scott Wilson formed a teenage centre-back pairing - Oliver Younger coming on for the final half-hour for his second game in a week which has seen him celebrate his 18th birthday - which played its part in securing a clean sheet.
And the impressive Bayode got the goal he deserved late on to give the Clarets the win their second-half domination merited.
The first half had been more even, although Burnley did have a couple of early chances to go in front, both made by Ali Koiki.
The left-back carried a real threat as he got forward, twice out-pacing the Barnsley defence to deliver excellent crosses.
But from the first, Christian N’Guessan failed to convert on the volley when heading would have been a better option.
And Bayode then lifted a shot over the top after being picked out 15 yards from goal.
Barnsley had been restricted to long-range shooting by a disciplined Burnley back four as Aidan Stone dealt comfortably with anything that came his way.
And the Tykes were allowed to make even less headway after the break as Duff’s men dominated.
Thomas went close with a clever free-kick which he curled round the wall and almost into the bottom corner, Jack Walton getting down at the last minute to make a smart save.
Moments later Bayode chipped an effort over the top after he intercepted a mis-cued pass and raced clear and the Clarets’ wideman then shot straight at Walton after another lively run.
But Bayode and Burnley finally got their reward with 16 minutes to go as they deservedly secured the points.
Rahis Nabi picked out Bayode with a fine pass and this time he made no mistake with another run into the box and a low finish past Walton.
Barnsley – whose only real chance had seen Victor Adebaoyejo fail to make the most of Rhys Dolan cross with an hour gone – belatedly enjoyed a brief moment of pressure from a couple of set-plays.
But the Clarets’ defence again dealt well with the threat and they could have added a late second when Bayode returned the compliment for Nabi, who shot too close to Walton from just inside the box.
Burnley: Stone, Birch, Clarke, Wilson (Younger 60), Koiki, Bayode, N’Guessan, Thomas, Nabi, Limb (Wood 70), Chakwana. Subs: King, Jumeau, Yari.
Barnsley: Walton, Smith, Wardle, Palmer (Tingle 80), Fielding, Lund, Swinburn, Wolfe, Adeboyejo, Brown, Dolan (Rowe 84). Subs: Simpson, Claire, Greatorex.
Referee: Rebecca Welch