Leinster score five tries in superb display at Aviva Stadium in Dublin
Leinster through to final at same stadium on 20 May
Leinster aiming to equal Toulouse's record of five European Cup titles
FT: Leinster 41-22 Toulouse
Leinster now await the winner of La Rochelle against Exeter in Bordeaux tomorrow before doing it all over again on 20 May at Aviva Stadium.
Will we have a repeat of last season's final? Or will Exeter cause an upset in France - it will again be across the BBC Sport website tomorrow with kick-off at 15:00 BST.
If you want more reaction to Leinster reaching the final, read the match report here
FT: Leinster 41-22 Toulouse
Leinster captain James Ryan, speaking to BT Sport: "We are absolutely delighted, it was the toughest game we have played all season. Just defensively it is such a challenge playing Toulouse as they are probably the best attacking side in Europe.
"I thought we managed the game well and during those periods when they got those yellow cards. We are happy enough but the job is far from done yet. There is plenty we can get better at. We are going to have to get better for the final again.
"It means a huge amount but we will enjoy this today and go again next week."
FT: Leinster 41-22 Toulouse
The neutrals hoped for one of one the all-time classics today but Toulouse discipline with two sin-bins cost the French side as Leinster turned up the intensity to punish them in those periods.
The Aviva Stadium is a fortress - can anyone stop them?
FT: Leinster 41-22 Toulouse
Thomas Ramos misses the conversion and the full-time whistle goes. No mad celebrations from Leinster, as it is just business.
Jack Willis
Huge amount of character shown by Toulouse to score the final try but it is too little too late as Jack Willis goes over from the maul.
Leinster 41-17 Toulouse
Toulouse giving it a go but Leinster's defence even at this stage is rock solid. Simply no answer, even for Antoine Dupont.
Leinster 41-17 Toulouse
All the replacements have resulted in the play slowing down. Toulouse heading out with a whimper it looks like.
Leinster 41-17 Toulouse
One brother for another as Harry replaces Ross Byrne. That is Leinster's third choice fly-half getting minutes in a European semi-final.
Talk about depth....
Leinster 41-17 Toulouse
Both sides make changes as Cyril Baille comes on for Thibaud Flament.
Leinster replace their full front row, with John McKee, Cian Healy and Michael Ala'alatoa all coming on.
Ryan Baird is also on for Jack Conan.
Jason Jenkins (con Ross Byrne)
Punished again!
There were calls for Jason Jenkins to start to deal with the power game of Toulouse, the replacement shows that size as he takes a short line to go over.
Ross Byrne pops it over the sticks again.
Image source, Getty ImagesLeinster 34-17 Toulouse
The reliable Jamison Gibson-Park is replaced by Luke McGrath.
Josh van der Flier (con Ross Byrne)
That could be it now!
Just like the first half, a sin-bin turns into seven points for Leinster as Josh van der Flier scores from the back of the resulting maul. Discipline has cost Toulouse today.
Ross Byrne as always makes no mistake with the extras.
Image source, Getty ImagesLeinster 27-17 Toulouse
Rodrigue Neti leads with his head into an incoming Josh van der Flier. Yellow card only is the call.
Thomas Ramos
Toulouse don't turn down this one, as Thomas Ramos makes no mistake. A routine kick for the France international.
Leinster 27-14 Toulouse
Charlie Ngatai is replaced by Ciaran Frawley. Some shift by the centre who hadn't played in four months.
Jason Jenkins is also on for Ross Molony.
Leinster 27-14 Toulouse
I can't think of many sides who after 25 minutes could still be in the game after a couple of quick Leinster tries. Toulouse have dominated possession so far in the second half - they are never out of it!
No Robbie Henshaw, no problem.
Charlie Ngatai produces a big huge defensive moment to win the ball back for Leinster with Toulouse seeking an all important try. You wonder was that the correct call to go to the corner?
Leinster 27-14 Toulouse
Toulouse turn down an easy three points and put the ball into the corner. Huge moment in the game.
Leinster 27-14 Toulouse
Toulouse are deep inside the Leinster 22 after a good carry from Pita Ahki. Antoine Dupont is starting to pull the strings at fly-half now.
Leinster 27-14 Toulouse
Ross Byrne gets the second half under way.