I used a 6inch pan x2 and one Pyrex bowl for the dome part. I baked a chocolate mud cake and then sliced it in half and filled it with chocolate buttercream. I then coated the outside with chocolate ganache and I allowed it to set before applying the mmf to the cake.
I used homemade marshmallow fondant and I added the food paste colouring to the melted marshmallow. (Makes life so much easier)