Neither Irish province have been at their very best after five rounds of the GUINNESS PRO12 but had a chance to lay a marker down in Dublin last weekend.
And Munster came storming out of the gate as tries from Cronin, Robin Copeland and Ian Keatley made sure Leinster never fully recovered after the break.
That type of clinical streak has deserted Munster at times this season, according to Cronin - and now the challenge lies in maintaining it against Scarlets on Friday.
"It was great to get a performance like that under our belts. I think everything clicked for us in the first half, each man had his own job to do and every man stood up on the night," Cronin told the IRFU website.
"There was a great level of intensity to our game and the work-rate was good across the park so thankfully it worked out for us.
"The difference on Saturday was that we made better decisions and were more clinical when it mattered most.
"This Friday is going to be massive for us. Having lost two home games already we know we owe the Thomond Park crowd a big performance.
"We'll also need a performance when taking on the likes of the Scarlets who are a very good side. We'll come with everything we came with against Leinster - the same preparation and the same physicality."
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