The 35-year-old who moved to Old Trafford in the summer had scored 14 times before the game against the Foxes on Sunday.
Henrikh Mkhitaryan opened the floodgates for the Red Devils before Ibrahimovic added the second 87 seconds later and Juan Mata completed the rout in the second half.
‘At 35y 125d, Zlatan Ibrahimovic is the oldest player to reach 15 @premierleague goals in a single season,’ according to Opta.
Ibrahimovic overtakes Teddy Sheringham who racked up 15 for United in the 2000-01 campaign.
Fcnaija