To make the chocolate custard, warm the custard in a pan on a low heat, then add the chocolate and stir until melted
Pour the chocolate into a bowl, cover with cling film and make sure the cling film touches the top of the custard to prevent a skin from forming. Then put in the fridge to cool completely
Start layering your trifle with a layer of brownies at the bottom of a trifle dish - the dish I used is 12cm deep and 20cm diameter, and it can hold 3L
Then add the cooled chocolate custard
For the cheesecake layer use a food mixer with a whisk attachment or an electric hand whisk to mix together the cream cheese, icing sugar and vanilla extract until smooth with no lumps
Add the double cream and whisk until it is very thick and holds it's shape
Pipe or spoon a thin layer of the cheesecake over the custard, you need to do this so the Creme Eggs have something to 'sit' on - otherwise they will sink into the custard layer
Add the Creme Egg halves around the sides, then cover them with the rest of the cheesecake mixture and smooth it over the top, then put it in the fridge overnight, or for at least 4 hours, to set
To decorate, whip up the double cream with the icing sugar and vanilla, and pipe or dollop it all around the edges
Add the custard in the middle, and the Creme Eggs around the edge - and some sprinkles if you like
Serve immediately, store any leftovers in the fridge and eat within 2 days