In a bowl, whisk together the eggs and the sugar until creamy. Stir in the butter, milk and cranberry extract. Sift the flour into a separate bowl and stir in the baking powder, salt and lemon zest. Using a wooden spoon, gradually incorporate the egg mixture. Drain the raisins and add to the batter along with the pine nuts. Pour the batter into the prepared pan. Arrange the apple slices in concentric circles over the surface. Sprinkle with sugar.