Watford's reward for beating FA Cup holders Arsenal at the Emirates is a clash with Crystal Palace in the semi-final.
Elsewhere, the winner of the replay between Manchester United and West Ham will face Everton.
The ties will be played on Saturday 23 April and Sunday 24 April at Wembley Stadium.
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Neutrals will be hoping the semi-final ties offer as much entertainment as the quarter-final matches did.
Crystal Palace were the first team into the last four after they overcame Championship side Reading on Friday.
A penalty from Yohan Cabaye with four minutes remaining was added to by Frazier Campbell in the 94th minute to seal a 2-0 victory for Alan Pardew’s men.
Next up was the controversial clash between Everton and Chelsea at Goodison Park.
The unsavoury clash between Diego Costa and Gareth Barry may have dominated the headlines but former Blues striker Romelu Lukaku bagged a second-half brace to effectively end Chelsea’s season.
The biggest shock of the FA Cup weekend came at the Emirates on Sunday afternoon where Watford humbled Arsenal.
Odion Ighalo put the Hornets ahead in the 50th minute before a thunderbolt from Adlene Guedioura gave Watford a 2-0 lead.
A goal from Danny Welbeck proved too little, too late as Quique Sanchez Flores’ side held on.
West Ham and Manchester United will have to do battle once again at Upton Park in a replay after their 1-1 draw at Old Trafford on Sunday.
Dimitri Payet had given the Hammers the lead with a terrific 35-yard free-kick but Anthony Martial equalised for the Red Devils with just seven minutes remaining.
But Palace and Watford will be the happiest teams after the draw as they have avoided the three teams that are positioned higher than them in the Premier League table.
The Eagles may not have won in the league since the turn of the year, but they will be hoping they can put their poor form behind them and focus on lifting their first ever FA Cup trophy.
Watford will also be seeking their first ever FA Cup win and will be looking to emulate last month's Premier League triumph over Alan Pardew's side when they won 2-1 at Selhurst Park.
However, Palace beat Watford 1-0 at Vicarage Road back in September.
Despite drawing the winner of Manchester United and West Ham, Everton have been installed as favourites to win this season's competition.
Their prize for beating Chelsea 2-0 on Sunday is a semi-final against 11-time winners Manchester United or an impressive West Ham team.
A date for their replay between United and the Hammers is yet to be confirmed but it's likely to be a terrific occasion with it being the final FA Cup tie at Upton Park.