Federico Valverde, Eduardo Camavinga, Arda Guler struck in the first half for the dominant Spanish champions.

Veteran Luka Modric netted the fourth before Guler tapped in his second to round off the rout.

Coach Carlo Ancelotti rested several key players ahead of the Spanish Super Cup starting in Saudi Arabia later this week, with Kylian Mbappe and Vinicius Junior only appearing as second-half substitutes.

Valverde volleyed home at the back post early on to help Madrid take control and Camavinga doubled the lead after 13 minutes with a header.

Endrick came close to adding a third for Los Blancos before Guler pounced with the aid of a deflection after cutting in from the right.

Brahim Diaz hit the post early in the second half before 39-year-old midfielder Modric notched with a neat curling effort.

Guler finished with ease at the death after Fran Garcia teed him up to cap a fine night for the Turkish playmaker.

On Saturday Barcelona and Atletico Madrid also eased into the next round, while holders Athletic Bilbao scraped through on penalties against third-tier Logrones.

The draw for the next round takes place on Wednesday, with the fixtures due to take place between January 14-16.