What turned into a comfortable night for Real began in nervy fashion as Czech champions Plzen began brightly with Patrik Hrosovsky's cross cannoning off Nacho and hitting the woodwork.
"I want to give assists, play, score goals. what a striker does".
Benzema doubled his tally and set up Gareth Bale in the space of 144 seconds towards the end of the first half, and Toni Kroos floated a handsome 67th-minute chip home to wrap up the win and leave Plzen playing exclusively for third place.
Navas has made it very clear that he will not leave Real Madrid and provide lethal competition to Courtois for a place in between the sticks.
Benzema then narrowly missed Bale's cross just in front of a gaping goal.
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The loss was Plzen's second 5-0 drubbing in Group G play after Roma's Edin Dzeko scored a hat-trick in leading the Italian side to an easy win in early October.
MF Casemiro, 6 - Another game in which the holding midfielder's aerial threat at set-pieces was more useful to his team than his covering of opposition counter-attacks.
MF Toni Kroos, 7 - Probably Kroos' best showing of the season so far, a pin-point corner brought an assist for Casemiro's header, and his extra cheeky chip over Plzen keeper Ales Hruska to make it 5-0 was perfectly executed.
Bale came close to scoring a second in stoppage time but was denied by the woodwork.
DF Javi Sanchez, 6 - The Castilla centre-back, 21, got his first taste of Champions League action when Ramos was removed on the hour mark, presumably to avoid risk of injury or suspension.
"Julen is a great coach but we are with Solari now, and playing with more confidence", Benzema said.