Melt chocolate in a glass bowl on top of a pot of boiling water.
As the chocolate melts, make the filling of your peanut butter cups by mixing the rest of the ingredients together until you get a thick batter.
When the chocolate has melted, pour half of it between 6 silicone muffin cups. Then, add a dollop of the filling on top and cover them with the rest of the melted chocolate.
Put them in the freezer for 30-40 minutes and then just ‘un-mold’ them.