Half the cherries and chop the chocolate into large chunks.
Sift the flour and baking powder into a large bowl. Stir the sugar into the flour mixture.
Melt the butter in a microwave for about 30 seconds.
In a separate bowl crack the egg, whisk in the vanilla extract, milk and melted butter. Stir the liquid mixture into the dry mixture.
Fold in the cherries and dark chocolate using a metal spoon - be careful not to be too rough as the cherries will be easily damaged.
Cook for approx. 30 minutes or until the muffins are risen and firm. Best eaten warm but be careful for hot chocolate!