Pour the mixture into a pre-buttered tray.
Bake the cake layer in a preheated 356°F (180 °C) oven for 25-30 min.
Cut the layer into 2-3 identical parts horizontally (depending on your tray and thickness of the layer).
Smear each with the cream and stack the layers on top of each other, finishing off with cream. Finish off the top and leave the cake to harden for about 5-6 hours in the fridge.