Scott Brown called their Scottish Cup win the 'best feeling ever'
Aberdeen took the lead inside 10 minutes as Jonny Hayes arrived from outside the 18-yard box to fire home Niall McGinn’s corner.
The Dons’ lead did not last long as the league champions struck back two minutes later, Stuart Armstrong finding the bottom corner with powerful long-range effort.
Patrick Roberts struck the post as the Hoops searched for a second goal just after the hour mark.
And they got the winner in the first minute of added time – Tom Rogic drove forward in the penalty area and slotted past the diving Joe Lewis.
Brendan Rodgers' side successfully went through the entire domestic campaign unbeaten
This is the best feeling ever
Hoops captain Brown said: “It’s incredible. The fans have been unbelievable.
"They’ve stuck by us all day. This is the best feeling ever.
“From the start of the season, no one would have expected it – Tom Rogic with a bit of magic at the end.
Stars who have played in both Scottish and English Premier Leagues Fri, April 15, 2016
Express Sport takes a look at some of the greatest players who have appeared in both the English and Scottish top flights in recent times
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Express Sport takes a look at some of the greatest players who have played in both the Premier League and the Scottish Premier League (now Scottish Premiership)
“Aberdeen gave us a great game. They have a great team.”
Australian Rogic, who came on as a first-half substitute, said of the winning goal: “It happened so quick… I’m just over the moon.”