Chelsea will face Manchester City in the Carabao Cup final at Wembley Stadium in February after beating Tottenham 4-2 on penalties on Thursday.
Spurs led 1-0 from the first leg at Wembley, but N'Golo Kante levelled the tie on 27 minutes. The midfielder latched on to a loose ball, and his low shot took three deflections on its way past goalkeeper Paulo Gazzaniga.
The Blues were dominant and went ahead on aggregate 10 minutes later. Pedro and Cesar Azpilicueta combined down the right to find Eden Hazard, who fired home first time.
Mauricio Pochettino switched to a back three at half-time, and it proved effective as Spurs levelled just five minutes into the second half.