Jermaine Beckford hit a clinical hat-trick as Leicester City humiliated East Midlands rivals Nottingham Forest to cruise into the fourth round of the FA Cup.
George Boateng set the hosts on their way, turning Lloyd Dyer's fine low cross into his own net early on.
And, after Robbie Findley missed a staggeringly easy chance for the visitors, volleying over from almost under the bar, the Foxes romped home in style.
Beckford headed his first from close range after a swift break following a Forest corner, made it 3-0 after the interval with a clever chipped finish and added a third when he shot home at the second attempt.
But, in truth, the margin of victory in this all-Championship tie could have been far greater.
A run of one win in 10 matches and just three goals, all of which came in that sole win against Ipswich, hardly provided an inspiring pre-match rallying call to the visiting side or their fans.
In keeping with that form, the Reds started the third-round replay with the sort of sloppiness you would expect from a team languishing in the relegation zone.
Leicester boss Nigel Pearson
“Jermaine Beckford wasn't very well. He was suffering with a cold”
Time and time again Forest gifted possession to their hosts, who were more composed, more threatening, generally sharper and could have been 3-0 up inside ten minutes.
Boateng's own goal put the hosts ahead inside seven minutes, when he could only turn a teasing low cross by Lloyd Dyer into his own net.
Neil Danns also had a blistering goalbound 18-yard half-volley headed over the bar by stand-in centre half Guy Moussi and Forest goalkeeper Camp did well to stop a David Nugent effort on the line after an almighty scramble.
Forest's rearguard and ageing holding midfield duo of Boateng and Jonathan Greening simply could not handle Leicester's pacy front quartet of Nugent, Beckford, Dyer and Paul Gallagher.
Findley did miss the chance of the game, or indeed any game.
Perhaps he was distracted by the presence of looming team-mate Harewood but, after Paul Anderson and Greg Cunningham had combined well on the left, Findley snatched at his shot as the bouncing ball fell for him and somehow thundered over from two yards.
But, for all the expressions of disbelief at that miss, the United States international was still by far Forest's biggest threat.
Did you know?
The only previous season in which Leicester and Nottingham Forest were paired in the FA Cup was 1900-01. Leicester, known as Leicester Fosse back then, were beaten 5-1 by Forest in a first round tie in February 1901.
He looked dangerous on the right flank, saw a good header well tipped over by Kasper Schmeichel and was at the heart of all their best - albeit rare - forays forward.
Forest were always second best, however, and Beckford underlined the gulf in class. The former Everton striker made it 2-0, heading in via the underside of the bar after a lightning Leicester counter-attack involving Nugent and the overlapping Lee Peltier.
Forest then had their best spell of the game, matching Leicester for the final 15 minutes of the half and suggesting that they could force their way back into the tie.
They began the second half promisingly, with Marlon Harewood blazing over after a sharp turn on the edge of the box.
But the game was as good as over within five minutes of the restart when the lively Nugent flicked on a long punt by Schmeichel and Beckford cleverly dinked the ball over the advancing Camp.
Beckford completed his treble when he followed up his own strike to bounce the ball over Camp at the second time of asking.
The chances kept coming too, and Danns and Peltier both shot wide late on, while Beckford nearly added a fourth and Paul Gallagher also fired over.
Forest's noisy support were at least spared further pain on a bitterly cold and miserable evening.
Their anger spilled over as they voiced their anger at their team towards the end and called for Billy Davies to be reinstated as manager, but they still sang constantly despite the dismal display.
Leicester will now host League Two side Swindon Town in the fourth round.
VIEWS FROM THE DRESSING ROOM
Foxes manager Nigel Pearson told BBC Radio Leicester:
"Jermaine Beckford wasn't very well. He was suffering with a cold. But it was good for him to get the goals. They will do his confidence a lot of good.
"It was great to get a response like we did tonight. After Saturday, people were going to ask a few questions but I think we answered our doubters.
"There are some tough fixtures coming up and it's easy for me to say that this is going to be the result to kickstart us. The tempo was good, the team ethic was good, the ability to nullify the opposition and the desire to work hard was there."
Forest manager Steve Cotterill told BBC Radio Nottingham:
"It was a tough evening for sure. Tough for everybody to take connected with the football club but, when you're the manager, I think what you probably do is take it a little bit more to heart than everybody else.
"That was a tough one tonight for sure.
"I was very disappointed with our first-half performance. We know we've had to make changes. We know who's missing in the back four but it was very disappointing, especially when we went a goal down."
Sorry, we were unable to load match stats, please try again.
Live Text Commentary
Full Time The referee brings the game to a close.90:00 +0:52
The ball is delivered by Paul Anderson, Header by Dexter Blackstock from deep inside the penalty area misses to the left of the goal.88:57
Unfair challenge on Lewis McGugan by Tom Kennedy results in a free kick. Andy Reid takes the direct free kick.86:52
Lewis McGugan is ruled offside. Direct free kick taken by Kasper Schmeichel.85:40
Paul Gallagher takes a shot. Save by Lee Camp.84:18
Inswinging corner taken by Lewis McGugan.83:50
Paul Gallagher takes a shot. Save by Lee Camp.83:20
Steve Howard challenges Joel Lynch unfairly and gives away a free kick. Joel Lynch restarts play with the free kick.82:39
A cross is delivered by David McGoldrick, clearance by Matt Mills. Andy Reid produces a left-footed shot from inside the area that goes over the bar.81:48
Paul Anderson concedes a free kick for a foul on Lee Peltier. Free kick taken by Matt Mills.80:08 Substitution
Substitution Dexter Blackstock on for Marlon Harewood.78:56 Substitution
Substitution Lloyd Dyer goes off and Tom Kennedy comes on.78:56 Substitution
Substitution (Leicester) makes a substitution, with Steve Howard coming on for Jermaine Beckford.78:41
Shot from inside the area by Lee Peltier clears the bar.77:27
The official flags David McGoldrick offside. Free kick taken by Kasper Schmeichel.76:59
Shot from deep inside the area by Paul Gallagher clears the bar.74:41
The offside flag is raised against Marlon Harewood. Kasper Schmeichel takes the direct free kick.74:15
Paul Anderson fouled by Neil Danns, the ref awards a free kick. Lewis McGugan takes the direct free kick.73:49
The referee gives a free kick against Guy Moussi for handball. Paul Konchesky restarts play with the free kick.72:50
A cross is delivered by Paul Gallagher, save made by Lee Camp.
Foul by Jermaine Beckford on Andy Reid, free kick awarded. David McGoldrick takes the direct free kick.69:58
Neil Danns takes a shot. Save made by Lee Camp.69:29
The offside flag is raised against David Nugent. Lee Camp restarts play with the free kick.69:06
Foul by Marlon Harewood on Richie Wellens, free kick awarded. Direct free kick taken by Jermaine Beckford.67:43
Chris Gunter takes the inswinging corner, save made by Kasper Schmeichel.63:02
Foul by Lewis McGugan on Richie Wellens, free kick awarded. Paul Gallagher takes the free kick.62:18
Paul Gallagher produces a cross, clearance made by Joel Lynch.61:18
David McGoldrick produces a right-footed shot from just outside the area that goes wide left of the goal.59:50 Booking
Booking Andy Reid goes into the book.59:46
Unfair challenge on Paul Gallagher by Andy Reid results in a free kick. Richie Wellens takes the direct free kick.58:00
David Nugent takes a shot. Save by Lee Camp.57:21
Neil Danns challenges Robbie Findley unfairly and gives away a free kick. Robbie Findley takes the direct free kick.56:14 Goal scored
Goal! - Jermaine Beckford - Leicester 4 - 0 Nott'm For Jermaine Beckford finds the back of the net with a goal from inside the box to the top left corner of the goal. Leicester 4-0 Nottm Forest.55:16
David McGoldrick is ruled offside. Matt Mills takes the free kick.54:40
Jermaine Beckford is ruled offside. Free kick taken by Lee Camp.52:52
Corner taken right-footed by Paul Gallagher, clearance by Marlon Harewood.51:59
Effort on goal by Lloyd Dyer from long range goes harmlessly over the target.51:03
Free kick awarded for an unfair challenge on Andy Reid by Jermaine Beckford. Andy Reid restarts play with the free kick.49:18
Assist by David Nugent.49:18 Goal scored
Goal! - Jermaine Beckford - Leicester 3 - 0 Nott'm For A goal is scored by Jermaine Beckford from deep inside the penalty box low into the middle of the goal. Leicester 3-0 Nottm Forest.48:02
Effort on goal by Guy Moussi from just inside the area clears the bar.45:01
The referee starts the second half.45:01 Substitution
Substitution David McGoldrick is brought on as a substitute for Jonathan Greening.45:01 Substitution
Substitution George Boateng goes off and Lewis McGugan comes on.45:00 +2:19 Half time
Half Time The half-time whistle blows.45:00 +1:31
A cross is delivered by David Nugent, Paul Gallagher takes a shot. Save by Lee Camp. Inswinging corner taken by Paul Gallagher, save by Lee Camp.44:13
The ball is delivered by Lee Peltier.42:44
Corner taken by Andy Reid played to the near post.41:33
Lee Peltier gives away a free kick for an unfair challenge on Paul Anderson. Direct free kick taken by Andy Reid, Robbie Findley produces a header from inside the area that goes over the crossbar.39:52
Corner taken by Andy Reid from the right by-line, clearance by David Nugent.39:21
A cross is delivered by Greg Cunningham, clearance by Matt Mills.36:56
Centre by Lloyd Dyer, save made by Lee Camp.35:38
The ball is sent over by Robbie Findley, Marlon Harewood produces a left-footed shot from close range which goes wide of the right-hand upright.34:45
David Nugent produces a right-footed shot from deep inside the penalty box which goes wide of the left-hand upright.33:52
Free kick awarded for a foul by Marlon Harewood on Neil Danns. Free kick taken by Kasper Schmeichel.32:47
Joel Lynch fouled by Jermaine Beckford, the ref awards a free kick. Lee Camp takes the free kick.30:45
A cross is delivered by Jonathan Greening.29:10
Assist by Paul Gallagher.29:10 Goal scored
Goal! - Jermaine Beckford - Leicester 2 - 0 Nott'm For Jermaine Beckford finds the back of the net with a headed goal from deep inside the penalty box. Leicester 2-0 Nottm Forest.28:25
Corner taken by Andy Reid from the right by-line, Sean St. Ledger makes a clearance.28:03
Paul Konchesky is flagged offside by the assistant referee. Chris Gunter restarts play with the free kick.26:19
David Nugent concedes a free kick for a foul on Joel Lynch. Lee Camp takes the free kick.25:18
A cross is delivered by Lloyd Dyer, Lee Camp makes a save.24:11
Foul by Chris Gunter on Lloyd Dyer, free kick awarded. Lloyd Dyer takes the direct free kick.22:22
The official flags Marlon Harewood offside. Kasper Schmeichel takes the direct free kick.19:11
Jermaine Beckford delivers the ball, save made by Lee Camp.18:27
Jonathan Greening fouled by Lloyd Dyer, the ref awards a free kick. Guy Moussi takes the free kick.17:09
Effort from long distance by Paul Gallagher goes wide right of the target.15:32
Corner taken right-footed by Paul Gallagher from the left by-line, Shot by Paul Gallagher from deep inside the penalty area misses to the right of the target.13:54
Unfair challenge on Jonathan Greening by Neil Danns results in a free kick. Direct free kick taken by Lee Camp.13:48
David Nugent delivers the ball, clearance by Joel Lynch.12:48
Free kick awarded for a foul by Jonathan Greening on Neil Danns. Kasper Schmeichel takes the free kick.11:18
Jermaine Beckford fouled by Jonathan Greening, the ref awards a free kick. Paul Gallagher restarts play with the free kick.10:45
Jermaine Beckford fouled by Guy Moussi, the ref awards a free kick. Paul Gallagher restarts play with the free kick.10:15
The ball is delivered by Greg Cunningham, Shot from deep inside the area by Robbie Findley clears the bar.9:49
Handball decision goes against Neil Danns. George Boateng restarts play with the free kick.9:25
Paul Gallagher sends in a cross, clearance made by Chris Gunter.7:41
Inswinging corner taken by Paul Gallagher.6:49 Goal scored
Goal! - George Boateng - Leicester 1 - 0 Nott'm For George Boateng concedes an own goal. Leicester 1-0 Nottm Forest.6:18
The ball is crossed by Lloyd Dyer.5:40
Corner taken by Paul Gallagher, save by Lee Camp.4:15
George Boateng challenges Jermaine Beckford unfairly and gives away a free kick. David Nugent takes the free kick.2:11
The official flags Marlon Harewood offside. Direct free kick taken by Kasper Schmeichel.1:25
The referee blows for offside against Marlon Harewood. Kasper Schmeichel takes the free kick.0:32
Corner taken right-footed by Paul Gallagher from the left by-line, Neil Danns takes a shot. Clearance by Guy Moussi.0:00
The referee gets the game underway.
Live data and text provided by our data suppliers