Two goals from Harry Bunn helped the Blades to a South Yorkshire derby victory at U21s level.
At the Oakwell Academy on Monday afternoon, the Blades hit back from a one-goal half-time deficit to secure a welcome victory.
Nigel Clough was in attendance as a strong United outfit was given the chance to catch the new manager's attention. Sean McGinty, Jose Baxter, Conor Coady and Florent Cuvelier all completed 90 minutes, whilst Chris Porter was included after returning from his loan spell at Chesterfield.
Additionally, Irish midfielder Keith Fahey, formerly of Birmingham City, was part of the Blades starting line-up as a trialist and was to make an impression.
The only the difference between the sides in the first half was a long-range strike from Barnsley's Abbott, which beat United's Willis.
After a few choice words from Chris Morgan at the break, the Blades came out for the second half with a point to prove and the scores were level on 56 minutes when FAHEY, from his midfield role, smashed home an effort from 25-yards, which more than matched the strike from the home side in the first half.
Fahey's leveller was the start of three goals in a nine-minute spell as the Blades forced Barnsley back. Bunn, on loan from Manchester City, put United in front on the hour when he outwitted a defender before slotting home.
Bunn then added his second and United's third on 65 minutes, taking advantage to fire home when McGinty's forward pass caught out the home defence and after Porter challenged with goalkeeper Dibble.
U21s boss Morgan said: "It was good to bounce back after the cup defeat and a derby victory at any level is always welcome. We put out a strong side, a few players were given the opportunity to get 90 minutes under their belts and we did well, particularly in the second half. Winning is a good habit and good for development."
United's U21s, despite being eliminated from the cup last week, have suffered just one defeat in six league fixtures this season.
Blades: Willis, Hodder, McFadzean (Johns 70), Fahey (Smith 65), Kennedy, McGinty, Baxter, Coady, Porter (Ironside 72), Cuvelier, Bunn.