- In a bowl, combine the fruit and sugar. Let macerate for 10 minutes.
- Preheat the grill, setting the burners to high.
- In a large cast iron skillet placed on the grill, gently brown the cake cubes in the butter. Be careful not to burn the cake. Remove the skillet from the heat.
- Sprinkle with the fruit and chocolate pieces. Cover with aluminum foil and let the chocolate melt for about 5 minutes.