The Bafana Bafana attacker scored in the seventh minute as Union thrashed Lommel 5-0 in the Belgian Pro League.
Mofokeng started the match and needed just seven minutes to add his name to the scoresheet.
READ: Messi magic not enough as Nashville rescue draw
The 21-year-old combined with Mateo Biondic, who supplied the assist for Mofokeng to double Union’s early advantage.
It was Mofokeng’s third Belgian Pro League goal since making the move from Orlando Pirates to Union during the off-season.
His first came on his league debut against Westerlo, when he entered in the 60th minute and scored four minutes later in a 5-1 victory.
ALSO: Mbappe stars as Madrid crush Rayo
Mofokeng then scored again on his first league start, finding the net as Union beat Sint-Truiden 3-0 on 2 September.
His latest strike means Mofokeng has scored in each of his first two Belgian Pro League starts.
Mofokeng has now scored three goals in five league appearances since arriving in Belgium.
The South African was withdrawn in the 64th minute against Lommel, having added another goal to an encouraging start to his European career.
AFRICA PICKS: Football tips and predictions
Photo: Royale Union Saint-Gilloise/X
