Melt the 2 chocolates in a heatproof bowl set over a pan of simmering water. (Or if you wish, microwave for 1 minute, stir, then microwave 30 more seconds. Stir till smooth.).
Meanwhile, line a sheet pan with parchment paper. Using a ruler and a pencil, draw a 9 x 10-inch rectangle on the paper. Turn the paper facedown on the baking sheet.
Pour the melted chocolate over the paper and spread to form a rectangle, using the outline. Sprinkle the cashews, apricots and cranberries over the chocolate. Press down lightly to set them into the chocolate.Set aside for 2 hours until firm. Cut the bark in 1 x 3-inch pieces and serve at room temperature. Enjoy!