For the glaze:
Instructions:
While the bars are cooling on a wire rack in the pan, make the glaze. In a saucepan on medium heat, combine the cream and the espresso powder, until it's dissolved together and the mixture is starting to bubble around the edges. Add the chocolate and the pinch of salt, then remove from heat and stir it all together. Let cool. Spread glaze on cooled bars in a thin layer. Refrigerate for 30 minutes. Cut into 1 1/2 x 2 1/2- inch bars or 2-inch squares. Put a coffee bean on each for decoration if desired.
NOTE: Sometimes it can be tough to find instant espresso powder! If you're unable to find it, get regular espresso ground as finely as possible. Sometimes "instant" powders contain sugar, so before putting the bars in the oven, test the batter and make sure it tastes slightly sweet with a bitter coffee aftertaste. If it is still too bitter, add a tablespoon of sugar and stir, and do it again if it's still not very sweet.