Place 6 large individual serving glasses onto the bench (or 8-10 smaller glasses).
Crumble the cooked chocolate brownie into small chunks.
Divide 1/3 of the brownie chunks between the serving glasses.
Pour over a small amount of Baileys Irish Cream (the brownie will soak up the Baileys).
Spoon over half of the vanilla custard, half of the whipped cream and half of the chocolate custard (in layers).
Drizzle over 1/3 of the salted caramel sauce.
Repeat all of the layers once more (including the Baileys Irish Cream).
Finish off with the remaining 1/3 chocolate brownie and the salted caramel sauce.
Place into the fridge until serving.