Berlin, Aug. 25 -- Robert Lewandowski scored a hat trick and Philippe Coutinho made his Bundesliga debut as Bayern Munich eased to a 3-0 win at Schalke on Saturday.

Coutinho, who completed his loan move from Barcelona on Monday, came on for an unhappy looking Thomas Muller with more than half an hour remaining, but had to be content with a co-starring role as Lewandowski stole the limelight.

The Polish striker opened the scoring with a penalty in the 20th minute, doubled Bayern's lead with a brilliant free kick in the 50th, and claimed his fifth league goal in two games with a fine turn and finish in the 75th.

Lewandowski also started the season with a goal in Bayern's 3-1 win over Energie Cottbus in the German Cup.

Schalke, playing i...