Manager Neil Lennon was thrilled by how well his fringe players handled Celtic's 3-1 win at Inverness CT.
The Scottish Premier League leaders made nine changes, with Tuesday's visit from Juventus in mind.
And goals from Kris Commons, Rami Gershon and Miku earned Celtic victory after an early strike from Nick Ross.
"The young lads were exceptional," Lennon told BBC Radio Scotland. "They have certainly earned my trust with that performance."
Lennon welcomed back Fraser Forster from a neck injury and the goalkeeper looked rusty throughout, failing to deal with the cross that led to the opening goal from Ross.
But Australian midfielder Tom Rogic turned in an eye-catching debut, while fellow youngsters Dylan McGeouch and Marcus Fraser also impressed.
"There was a great togetherness about the team," enthused Lennon.
"There are places up for grabs on Tuesday and I thought they we were magnificent- it shows what we have coming through.
"I know what I've got with the young players but you don't always know how they will react to the first team.
"Tom was terrific, considering where he come from, with an athletic style. Dylan and Marcus were fantastic too.
"Rami has settled in well and scored a great goal. He is an asset to the squad.
Lennon was delighted to celebrate a fifth successive league win but all focus now switches to the first leg of a mouth-watering Champions League double bill with Juventus.
"The squad will be vibrant for Tuesday," said Lennon, who has fitness concerns over Emilio Izaguirre and Georgios Samaras.
"The players rested have been in great form for what will be a titanic game.
"I'm always optimistic going into games and the crowd will play a huge part.
"It's a two-game tie, so it won't be over no matter what happens on Tuesday.
"I want us to get a good foothold in the tie. Of course, we want to go to Italy with a lead.
"We want to be in a position where Juventus really have to knock on our door to try and win it and our away form has been healthy this season."