The Danish frontman came off the bench with the score at 1-1 before producing a sensational solo finish to snatch the three points in the dying seconds at St. James' Park.
Osula surged down the right flank before cutting inside to curl a magnificent clincher past goalkeeper Senne Lammens in front of the Gallowgate End, sending the Magpies faithful wild.
The 22-year-old is nominated for the monthly prize along with Morgan Gibbs-White and Elliot Anderson of Nottingham Forest, Alex Iwobi of Fulham and Iliman Ndiaye of Everton.
Manchester City's Bernardo Silva and Aston Villa's John McGinn are also on the shortlist.
Voting opens at 1pm BST on Thursday, 26th March, with the winner set to be announced at 1pm BST on Friday, 3rd April. United fans can vote for Osula by clicking here.
