For the filling:
Chocolate ganache with a splash of liqueur of your choice - I used Drambuie
Morello cherry jelly - I used a jar of morello cherries with juice and 4 gelatine leaves (I would recommend 6-8 leaves as mine was very soft)
I cut the jelly out with a circular cutter and placed onto the ganache (you really need ganache on both sides of the macarons so to make the whole sandwich stick together.