BERLIN (AFP) - League leaders Bayern Munich, freshly qualified for the UEFA Cup semi-finals, routed Borussia Dortmund 5-0 on Sunday to edge ever closer to a 21st Bundesliga title.

Bayern stormed into an incredible 4-0 lead after just 22 minutes, thanks to some inspirational play by Italian Luca Toni and Brazilian Ze Roberto against a meek Dortmund defence.

After being taken to extra-time by Getafe in the second leg of the UEFA Cup quarter-finals on Thursday, which they eventually won 3-3 for a 4-4 aggregate win thanks to away goals, Bayern did not waste any time against Dortmund.

Striker Lukas Podolski opened the scoring in the third minute with a 20-metre wonder strike.

Five minutes later, Ze Roberto was played in by Philipp Lahm for a goal for the home side seemingly not missing the presence of France playmaker Franck Ribery, in the stands after picking up a foot injury against Getafe and being rested by coach Ottmar Hitzfeld.

Bayern, who seemed so laborious against Getafe, monopolised possession against Dortmund, a team they will also meet next Saturday in the final of the German Cup.

Toni, whose late extra time double did it for Getafe, hit a brace within four minutes (18, 22) from Ze Roberto free-kicks, taking to 31 the number of goals scored in all competitions this season - and 18 in the Bundesliga.

Ottl hit the fifth 27 minutes into the second-half as Hitzfeld rolled on the replacements in a game well won.

With just six games left to season's end, Bayern are now 10 points ahead of second-placed Werder Bremen and can move even closer to the league title at eighth-placed Frankfurt on Wednesday.

Werder Bremen thrashed Schalke 04 5-1 on Saturday to move into second, a loss too many for under-fire Schalke coach Mirko Slomka.

Slomka, whose side were ousted from the Champions League in midweek by Barcelona, stood down on Sunday after the intense pressure that had been building since three successive league defeats in February finally proved to be too much.

Defending league champions Stuttgart continued their erratic form with a 3-0 defeat at Bayer Leverkusen on Sunday to leave themselves in sixth place and 15 points from their likely successors, Bayern.