Put the chocolate in a small saucepan with the butter, honey, mint and 1 1/2 tablespoons of water. Warm gently over a low heat until the chocolate has melted.
Remove the pan from the heat and serve warm.
Break up some chocolate brownies and 1/2 fill some glasses. You can put some mixed berry compote of the brownie if you want.
Add some ice cream and top with the warm sauce.