This is of course a luxury item, and if the government hear of it, they may levy a luxury tax on it!
One piece of toast, Marmited and buttered with cheese toasted on top of that. A second piece of toast exactly the same. Slap the cheesy sides together, then stick it in your sandwich toaster!!!!.
Caution! You may have to put a heavy weight/stand on, the sarnie toaster as it won't close too easily. Plus, I recommend putting the whole thing on a nice clean, heat proof, tray, to catch the mighty Marmitey cheese goo that will inevitably escape!
And if the tray was clean, you can eat the drippy bits too!
Hahaha! This would be a great basis for an advert!!! :¬D