Line an 8 by 12-inch rectangular pan with parchment paper. Place a large clean heatproof glass bowl over a large saucepan filled with a few inches of simmering water, making sure the bottom does not touch the water. Melt the chocolate, stirring, until it is very smooth and shiny.
Add the nuts and fruit into the chocolate and mix well. Pour the chocolate mixture onto the prepared pan. Place in the refrigerator until set, about 4 hours. This can be made up to 4 days in advance and kept in an airtight container.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.