After a superb first-half performance with excellent chance conversion (five goals from nine shots), BVB dropped down several gears after the break to cruise into the cup final. Here are the match facts.
Biggest semi-final win: It was Borussia's 15th semi-final appearance, but never before have the Black & Yellows won by as large a margin as they did against Holstein Kiel - and all without injured top goalscorer Erling Haaland
''La Decima'': BVB have reached the DFB Cup final for the tenth time in club history, drawing them level on the all-time ranking with 1. FC Cologne and Werder Bremen. Only Schalke (12) and Bayern Munich (24) have reached more finals than Borussia.
Bulwark: The entirety of the attacking unit shone up top, but Mats Hummels was a dominant presence at the back . The World Cup winner won 79% of his challenges, including all aerial duels.
Top scorer: Jadon Sancho has been involved in eight goals in his five cup appearances this season (four goals, four assists) - he has more scorer points than any other player in the competition.
A repeat of round one: In Thorgan Hazard, Gio Reyna, Marco Reus and Jude Bellingham, four of the five players who scored in the 5-0 first-round win in Duisburg also got on the scoresheet against Kiel. The only player missing was Jadon Sancho, who did, however, provide two assists.
Big half-time lead: only once before in DFB Cup history had BVB enjoyed a larger half-time lead than in this event. In the first round of the 1978/79 season, the Black & Yellows found themselves 6-0 up at the break against BSV 07 Schwenningen (final score 14-1).
Reus a constant scorer: Marco Reus has been involved in a goal in four of his five cup appearances this season (two goals, two assists) - only in the game against Paderborn did he fail to get his name on the scoresheet, although he was certainly limited by just four minutes of playing time.
First brace: Giovanni Reyna bagged his first ever brace at senior level. Making his fifth appearance in the competition, the young American grabbed his third goal, meaning he has one more than his father Claudio managed in his nine DFB Cup appearances.
Journey through the past: Two Dortmund players - Mats Hummels and Lukasz Piszczek - were also in the starting line-up for the only previous cup clash between BVB and Holstein Kiel in February 2012. Back then, Borussia celebrated a 4-0 win over the then Regionalliga team in the quarter-finals.
Run against underdogs: The Black & Yellows have progressed to the next round in each of their last 27 meetings with clubs from lower tiers. The last BVB defeat dates back to October 2010, when they were knocked out by 3. Liga club Offenbacher Kickers in a penalty shoot-out.