Bayern Munich have completed an unprecedented treble by clinching the German Cup title with a 3-2 victory over Stuttgart. A penalty by Thomas Muller followed by a brace from his Germany teammate Mario Gomez gave the European champions a three-goal lead after the hour mark. Stuttgart gave Jupp Heynckes men a real scare with two goals from Martin Harnik but the Bavarians held on to claim their victory. Bayern become the first German club to complete the league, cup and Champions League treble in a single season. Bayern 3-2 Stuttgart