United's U23s made it nine games unbeaten with victory in the Professional Development League at Stocksbridge on Monday afternoon.
A first-half brace from substitute Tyler Smith, who replaced the injured Marc McNulty in the 10th minute, ensured the Blades beat Barnsley at the Look Local Stadium.
SMITH had only been on the field for 60 seconds having taken the place of McNulty, when he rounded Walton and slotted home.
Skipper James Wilson headed over midway through the first period, before SMITH doubled United's lead, firing home after good work by Scougall.
United continued to have the better chances as half-time approached. Mallon lashed an effort wide, before Brooks saw an effort saved by the face of Walton, who knew little about his contribution.
Before the break, Brooks forced Walton into a fingertip save, before Ramsdale was called into action for the first time to deny Carvell.
The personal battle between Brooks and Walton continued in the second-half, with the Barnsley stopper again prevailing. And on the hour, ROWE capitalised on the Blades losing possession in defence before rounding Ramsdale and bringing the visitors back into the contest.
Hirst and Ford were introduced with Hallam and Scougall making way and Slater tested Walton twice in a matter of minutes with long-range efforts.
Barnsley battled gamely, but never looked like breaching the Blades again, as the climb up the table continues.
Blades: Ramsdale, Bennett, Mallon, Wilson, Kelly, Semple, Slater, Scougall (Ford 64), McNulty (T. Smith 10), Brooks, Hallam (Hirst 62).
Unused: Graham, Warhurst.