The first semi-final encounter of the inaugural expanded tournament was decidedly one-sided despite injury and illness robbing Madrid of Karim Benzema and Gareth Bale.

Toni Kroos broke the deadlock when he scored directly from a quickly taken corner before the excellent Isco struck a second in the first half.

Luka Modric completed the scoring midway through the second period to send Madrid into a final against either Barcelona or Atletico Madrid and consign Copa del Rey holder Valencia to an early trip home, Dani Parejo's late penalty proving scant consolation.

Some quick-thinking from Kroos caught out the local TV director as well as Jaume Domenech, with replays of earlier action still being shown to viewers as the Madrid midfielder curled a corner into the net despite the Valencia keeper's best efforts.

Kevin Gameiro blasted over the bar from a promising position after a rare attack from Valencia, who were limited to 36 per cent of the first-half possession as Madrid controlled the tempo with ease.

One clinical passing move set up Modric for a shot and, when his effort was blocked by Ezequiel Garay, Isco controlled the ball on his chest and volleyed expertly home from 12 yards.

Luka Jovic had a quiet half but should really have made it 3-0 before half-time, the striker failing to beat Jaume with the rebound after Isco hit the left-hand post with a header.

Federico Valverde rippled the side-netting in the second half but it was Modric who put the game beyond Valencia, gathering Jovic's pass into the box, working space with a step-over and bending a sublime shot past Jaume for his fifth goal of the season.

Parejo at least gave Valencia fans something to cheer in second-half stoppage-time, firing a penalty high past Thibaut Courtois after a VAR review saw Sergio Ramos penalised for handball.