Osman Sow netted twice as Hearts scored five on home soil for the second successive match to see off Livingston.
The Jambos, who remain top of the Scottish Premiership after this 5-0 thumping, took just 14 minutes to get up and running with Soufian El Hassnaoui breaking the deadlock.
On the half hour mark it was two. Having watched Alim Ozturk rattle the post just a minute earlier Jamie Walker found a way past Darren Jamieson from a tight angle.
Sow then profited from a stray back pass to fire home...