The forward netted the winner in the Coppa Italia final defeat of Lazio, completing the domestic double and keeping Juventus' hopes of a treble alive.
Juventus remains on course for a historic treble after substitute Alessandro Matri secured the Serie A champion a 2-1 extra-time Coppa Italia triumph over Lazio, claiming the trophy for the first time in 20 years.
Massimiliano Allegri's men were desperate to end a barren spell in the competition having lost their last three finals and, although they struggled in regulation time, Matri proved decisive in the 97th minute to wrap up a domestic double.