Benoit Badiashile scored the opening goal as he made his first appearance of the season in Chelsea's 2-0 Carabao Cup victory over Blackburn at Stamford Bridge.
The France defender had not started a Blues match since he was injured in their draw with Nottingham Forest in May and got himself involved at both ends of the pitch in a game that also saw Reece James return to the starting XI.
Raheem Sterling fired home after the break, and while the visitors had defended well, they never looked close to coming back into the contest.
Chelsea have now reached their 24th quarter-final in 33 attempts, and are one step closer to lifting a first League Cup since 2015, when Blues boss Mauricio Pochettino was in charge of runners-up Tottenham.
