Boss Derek McInnes says working with young players is key to keeping the Dons competitive.
Aberdeen beat rivals Rangers 1-0 on Sunday at Hampden to reach the League Cup final.
The winning goal was scored by midfielder Lewis Ferguson, who is just 19.
Scott Wright, 21, Scott McKenna, 21, and James Wilson, 22, all started for the Reds with 21-year-old Derby loanee Max Lowe coming on in the first half for the injured Andy Considine and 23-year-old Dominic Ball also came on as a sub.
Over his tenure in charge of Aberdeen McInnes has lost the likes of Jonny Hayes, Ryan Jack, Kenny McLean, Peter Pawlett and Ash Taylor from sides that have helped the Dons finish second in the Premiership for the last four seasons and reach both cup finals in the 2016/17 campaign.
Pittodrie gaffer McInnes says it is difficult to replace the likes of Jack, Hayes and McGinn like for like.
So bringing in and developing young players such as Ferguson, who was signed from Hamilton in the summer, is key to keeping Aberdeen competing for silverware and at the top end of the Premiership.
McInnes said: “We’re trying to build another team at the minute and it’s tough trying to keep replacing good players.
“I can’t get a ready-made Kenny McLean, Ryan Jack or Jonny Hayes. It’s difficult to replace like for like.
“The plan is to work with young players, they get used to your way of working and improve them.
“To sign someone like Lewis Ferguson is important, we took Kenny McLean from St Mirren, we took Graeme Shinnie from Inverness, young players we felt we could give a platform.
“We’re not trying to sell Lewis, we want to hold onto him for longer.
“We’re trying to put a competitive team on the pitch. Rangers have clearly improved and it’s always hard to beat Celtic.
“But do I think we can beat Celtic over a cup tie? Absolutely.
“For us to win the League Cup we’re going to have to beat Hibs, Rangers and Celtic in Edinburgh and Glasgow, it’s not easy but we’re 90 minutes from doing it.”
Sunday’s victory took Aberdeen into their first cup final since the 2017 Scottish Cup final. That day the Reds were just edged out 2-1 by Celtic’s invincible treble winners.
McInnes felt that match was the “end game” for the team he had then and hopes the current side can go one better and lift the League Cup on December 2.
He added: “The team that lost that final were up against the best Celtic team of a generation, they were outstanding.
“They got rightly praised for beating everyone before them.
“I do feel losing those two finals was tough on us that season. We came up against a really good team.
“That day (Scottish Cup final) was the end game for that team. It was three or four years in the building signing players: Kenny McLean, Ryan Jack, Jonny Hayes, Niall McGinn.
“We lost Peter Pawlett and Ash Taylor as well, five of my regular outfield starters I lost that summer.
“It almost felt like it was the last game for them – that team was three or four years in the building.”
Meanwhile the Dons have confirmed that Andy Considine’s neck injury suffered in Sunday’s game is not as serious as first thought, but it is likely to keep him out of tomorrrow’s match with Hamilton at Pittodrie.