Bayern secures a 4-1 advantage over Lazio into the second leg.
They led 3-0 at half-time, with Lewandowski snapping onto Musacchio’s loose backpass to tap in the first. Musiala then found the bottom corner, with Sane adding a third from close range.
It was a poor start to the second half for the hosts, with Acerbi scoring an own goal in the 47th minute before Correa pulled one back minutes later when he slotted past Neuer.
Bayern already has a huge win advantage in the quarter-finals with that result, with the second leg due to take place on March 17th.
Three of the goals were from defensive errors — a tame Mateo Musacchio back-pass presented Lewandowski his 72nd Champions League goal, now above Raul and third in the all-time goal rankings in the competition.
Then Sane capitalised off a Patric slump to the ground and Francesco Acerbi turned into his net off a Sane cross within three minutes from either side of the interval.
Joaquin Correa pulled one back in 47 minutes to begin an energetic team endeavour down the field but the mountain had already peaked.
Though sandwiched between Bayern’s rout was an impetuous guided finish into the corner by 17-year-old Jamal Musiala.
They’re back to winning ways and turn their interest to the league when they face Cologne on Saturday.
The Italians learnt the hard way here. Bayern Munich at their attacking best and Lazio close to their defensive worse presented a destructive recipe.
It looks like a big ask for Lazio to come back in that second leg, particularly with Bayern’s four away goals. Next up for them is Bologna in Serie A at the weekend.