Melt the dark chocolate in the microwave for 1.5 minutes.

Whisk 2 tablespoons of custard into the melted chocolate until smooth, then whisk in the rest of the custard.

Whip the cream with a splash of vanilla and icing sugar until thick and fluffy.

Crumble half the chocolate cake into the bottom of your trifle dish.

Drizzle 1/2 cup of cherry syrup over the cake.

Spread half the chocolate custard over the cake layer, making sure it reaches the edges.

Add half the Morello cherries on top of the custard.

Spoon half the whipped cream over the cherries and spread evenly.

Repeat the layers: cake, cherry syrup, chocolate custard, cherries, and whipped cream.

Crush the Twix or Flake bars and sprinkle them over the final cream layer.

Garnish with fresh cherries for a finishing touch.