Heat a nonstick saute pan over medium to low heat. Add the butter and brown sugar to melt. Place the banana halves in the pan and saute until the bananas caramelize, approximately 1 minute. Turn the bananas over and caramelize on other side. Remove the pan from the heat.
Put the sugar, whipping cream, and vanilla extract in a metal bowl and whisk until firm peaks form.
To serve, grate the dark chocolate on a plate. Sift the icing sugar over the prepared brownies and plate. Place the caramelized bananas on the plate and dollop the whipping cream mixture on the brownie.
Recipe courtesy of Roger Mooking