Golden State fought off a charge from defending champions the Cavaliers on Monday to earn their second NBA championship in three seasons with a 129-120 game-five victory.
High-profile recruit Durant was the difference as the Warriors wrapped up a 4-1 series triumph on home court in Oakland.
Durant – who swapped the Oklahoma City Thunder for the Warriors in search of an elusive title – scored 39 points on 14 of 20 shooting with seven rebounds and five assists.
The 2014 MVP's length and shooting ability was too much for Cleveland's overmatched defence.