Step 1Heat the oven to 350 degrees. Grease an 11x8-inch baking dish.
Step 2Cream the butter and sugar in the bowl of an electric mixer, then add the syrup and egg and beat well. Mix in the vanilla and dried fruit. Add the flour and mix well. Using floured hands, press the dough evenly into the baking dish.
Step 3Bake until the cake is set and golden, 25 to 30 minutes.
Step 1Melt the butter in a saucepan over low heat. Remove from the heat, cool to room temperature, then add the sugar, ginger and syrup to make a spreadable mixture. Ice the cake while warm, then cool completely before slicing into squares.