The next day, put the apricots and their soaking water in a small pan along with the sugar. Bring to a simmer and simmer approx 10 minutes so that the sugar is dissolved and the syrup thickens slightly. Remove from the heat and leave to cool. Note that to here can be done ahead of time.
Put approximately 1tsp of yogurt in the opening of each apricot and then press a glazed pistachio or almond into the yogurt. Repeat with the rest of the apricots and serve with a little more of the glazed nuts and fruit on the side for decoration.