Captain James Tavernier turned up and delivered on the big occasion once again for the Gers as he netted the decisive goal in the 76th minute, arriving at the back post to fire a right-footed shot beyond Kelle Roos.
Having previously lifted the 2021 Scottish Premiership title and 2022 Scottish Cup during his legendary eight-year spell at Rangers, Tavernier has now completed the set of major trophies in Scotland by adding the Scottish League Cup to his collection.
The 32-year-old right-back has also increased his goal tally for the season to 14 in all competitions, level with Abdallah Sima, with his latest strike enough for Gers manager Philippe Clement to celebrate his first piece of silverware just two months after his appointment.
Rangers have now won a record-extending 28 Scottish League Cups, seven more than their nearest challengers and bitter Glaswegian rivals Celtic, while Aberdeen's wait to win the competition for the first time since 2014 goes on.
More to follow.
Monaco 
Stade Brestois 29 
Bordeaux 
Nimes 
Bayern Munich 
FC Augsburg 
Paris Saint Germain 
Toulouse 
CSKA Moscow 
FC Rostov 
Leicester 
Chelsea 
Valencia 
Betis 
Dynamo Kyiv 
Chornomorets Odesa 
Verona 
Inter 
Bayer Leverkusen 
FC Heidenheim 
Borussia Dortmund 
SC Freiburg 
VFL Wolfsburg 
Union Berlin 
Arsenal 
Nottingham Forest 
Everton 
Brentford 
Spartak Moscow 
Lokomotiv Moscow 
Rangers 
Dundee Utd 
Atletico Madrid 
Alaves 
Lens 
Marseille 
Ingulets Petrove 
Shakhtar Donetsk 
AC Milan 
Juventus 
ST Malo 
Manchester City 
Tottenham 
Eintracht Frankfurt 
Werder Bremen 
Girona 
Espanyol 
Feyenoord 
Heerenveen 
ST Etienne 
Montpellier 
Grenoble Foot 38 
Heart Of Midlothian 
Celtic 
Reims 
Lyon 
PSV 
Groningen