Beat the eggs with the sugar. When pale, add the oil, milk and vanilla

NextAdd the sifted salt, flour and baking powder.

Add the sifted salt, flour and baking powder.

NextAdd the Oreos, without their filling, in pieces (just put them in a bag and bash them with a rolling pin)

Add the Oreos, without their filling, in pieces (just put them in a bag and bash them with a rolling pin)

NextSet aside 1/3 of the batter and pour it into a tin.

Set aside 1/3 of the batter and pour it into a tin.

NextAdd the sifted cocoa to the rest of the batter and divide it between 2 more tins.

Add the sifted cocoa to the rest of the batter and divide it between 2 more tins.

NextBake at 180° for about 15-20 min.

Once cold, trim them so they're level.

NextBeat the butter, add the biscuit fillings and icing sugar and keep beating until creamy.

Beat the butter, add the biscuit fillings and icing sugar and keep beating until creamy.

NextGanache:

Ganache:

NextMelt the chocolate with the coconut oil in the microwave in 30-second bursts and add the cream little by little, stirring well.

Melt the chocolate with the coconut oil in the microwave in 30-second bursts and add the cream little by little, stirring well.

NextPlace a chocolate sponge, spread with buttercream, then the plain sponge, more buttercream and the other chocolate sponge. Chill for about 10 min in the fridge.

Place a chocolate sponge, spread with buttercream, then the plain sponge, more buttercream and the other chocolate sponge. Chill for about 10 min in the fridge.

NextCover with the ganache. Leave to set. Decorate with the 2 Oreos and whatever you like best (I made it the day before and it was great)