Rosenior was appointed as Blues head coach on Tuesday but didn't take training until Thursday, meaning this was his first game in charge.

The Blues were totally dominant in the first half, enjoying 78 per cent possession and having Charlton camped in their defensive third for most of the opening 45 minutes.

However, we had to wait until the fourth minute of injury-time to take the lead when Jorrel Hato smashed home an impressive first goal for Chelsea.

The head of Tosin then doubled our advantage five minutes after the restart before Miles Leaburn pulled a goal back soon after.

Our two-goal advantage was restored five minutes later, though, through Marc Guiu and the win was rounded off in injury time with further goals by Pedro Neto and Enzo Fernandez, the latter from the penalty spot.

Rosenior's first starting XI

Rosenior had a watching brief at Fulham but for his first game as head coach he made eight changes to his XI, with a League Cup semi-final lying in wait.

Filip Jorgensen started in goal behind a back four of Josh Acheampong, Tosin, Benoit Badiashile and Hato.

Moises Caicedo captained the team in a midfield alongside Andrey Santos, who worked alongside Rosenior at Strasbourg last season.

Alejandro Garnacho started on the left, with Jamie Gittens on the right and Facundo Buonanotte playing in the No.10 role. Marc Guiu lead the line.

Hato was inverting from left-back into midfield and after a short break due to a medical emergency with a Charlton fan, it was the former Ajax man who had the best chance of the opening stages as Buonanotte showed good feet before curling in a cross from the corner of the penalty area on the right. Unfortunately Hato was unable to generate enough power with his header from eight yards out and it ended up being a routine save for Will Mannion.

The Blues were posing Charlton problems and Gittens was looking lively on the right, as the England Under-21 international cut in and had a low drive parried away by Mannion soon after.

There were then a string of Chelsea corners before Andrey Santos was next to go close, shooting wide from outside the area.

The Blues’ dominance was evident as there were spells where 21 of the 22 players on the pitch – all bar Jorgensen – were in Charlton’s defensive third. This led to Tosin trying his luck from range and Gittens flashing an effort from the corner of the penalty area midway through the first half.

Charlton were not able to build any passages of play but did have a powerful shot from inside the penalty area blocked when a free-kick was not fully cleared half an hour in.

But it was a rare attacking highlight during a totally dominant first half from the Blues. With Charlton sitting so deep, often Chelsea’s defenders were in possession around the Addicks’ penalty area and Acheampong was next to have a shot at goal, as his powerful drive from 20 yards was heading for the bottom corner until Mannion parried it away.

As half-time approached, Garnacho had a goal-bound shot blocked following a misplaced Charlton pass led to an attack and then some good wing play from Gittens was followed by a powerful 25-yard shot towards the near post, which had to be pushed away by Mannion.

Breakthrough finally arrives

It looked as though Chelsea would be left frustrated heading into the break but in the fourth minute of additional time, a deep Garnacho cross from the left was nodded down by Marc Guiu and Hato smashed a left-footed shot from inside the penalty area into the near top corner, leaving Mannion with no chance.

Charlton started the second half brightly but it wasn’t long before Chelsea had our second.

Shortly after a goalmouth scramble which almost saw us get a shot away and we had a penalty appeal for handball, we were awarded a free-kick, which Buonanotte whipped into the near post and the pace on the ball meant Tosin only had to direct his header towards goal, and the power beat Mannion.

Garnacho almost added a third when he curled a shot narrowly wide but it was the hosts who grabbed the next goal. Again, it was a set-piece which provided the attack and although Jorgensen did well to save the initial header from Lloyd Jones, former Chelsea youngster Leaburn converted the rebound.

Three for the Blues

The two-goal advantage was restored just five minutes later though when good play from Garnacho saw Buonanotte have a shot saved by the legs of Mannion and Marc Guiu smashed home the follow-up to make it 3-1.

Estevao, Enzo Fernandez and Liam Delap were all introduce midway through the second half and two of those were swiftly involved with another Chelsea chance, as Estevao slipped the ball through to Enzo and he had a low shot saved by Mannion.

Estevao was a real threat from the off and he went close soon after, cutting inside his defender and firing a shot from an angle which had to be palmed over the bar, in a chance which was very similar to the Brazilian's goal for Palmeiras against the Blues.

The teenager then crossed for Delap, who could only shot wide from close to the penalty area, before Estevao then opted to go alone and force a save from Mannion.

As the 90 minutes were up, it looked as though it would be a 3-1 win for the Blues. However in the three minutes of injury-time, there was still time to score another two goals.

Another substitute, Neto, got his name on the scoresheet when he cut inside his defender and smashed into the near post and then the win was rounded off when Charlton goalkeeper Mannion was harshly penalised for diving at the feet of Estevao. Fernandez duly stepped up to convert the penalty emphatically into the bottom corner.

What it means

Tonight's victory means we will be in the fourth round draw of the FA Cup, which is set to take place at 6.35pm on TNT Sports and their YouTube channel.

What's next

Rosenior's second game in charge - and first at Stamford Bridge - will be the League Cup semi-final with Arsenal on Wednesday night.

His maiden game as a head coach in the Premier League will come on Saturday at home to fifth-placed Brentford.

The teams

Chelsea: Jorgensen; Acheampong, Tosin, Badiashile, Hato (Fofana 85); Caicedo (c), Andrey Santos; Gittens (Estevao 66), Buonanotte (Buonanotte 69), Garnacho (Neto 85); Marc Guiu (Delap 69)
Substitutes not used: Sanchez, Chalobah, Essugo, Joao Pedro
Scorers: Hato 45+4, Tosin 50, Marc Guiu 62, Neto 90+1, Fernandez 90+4
Bookings: Badiashile 5

Charlton: Mannion; Gough, Jones, Bell (Olaofe 74); Bree, Coventry (Anderson 66), Docherty (c) (Rankin-Costello 67), Carey, Campbell (Knibbs 82); Leaburn, Kelman (Gillesphey 66)Substitutes not used: Maynard-Brewer, Berry, Apter, Fullah
Scorers: Leaburn 57
Bookings: Docherty 31

Referee: Chris Kavanagh
Attendance: 26,475 (3,317 away)