For the mug cake mix all the ingredients in a bowl with a whisk and then pour into a ramekin or mug.
Microwave for 60 seconds for a gooey cake, 90 seconds for a more firm cake. You can alternatively bake it in a pre-heated oven at 175C for 15-20 minutes depending on how you like your cake. I would suggest not using the mug in the oven.
Once ready allow the cake to cool before pouring the glaze over.
For the glaze allow the cream cheese to come to room temperature and then mix everything together with a whisk and it's ready to use.