In a large bowl, mix all the dry ingredients - flours, baking powder, salt and sugar. Set aside.
In a medium bowl, whisk in milk, butter, eggs and vanilla extract.
Make a well in the center of the dry ingredients and add the wet ingredients and mix until just combined.
Stir in the grated chocolate.
Follow the instructions on the waffle maker and make waffles accordingly. In my waffle maker, I add 1 cup of batter and cook for about 4 minutes for perfect waffles.
Keep the waffles warm in a preheated 200°F oven.
For the Chocolate syrup: In a medium size sauce pan; warm the cream until small bubbles form on the edges of the pan. Remove from heat and whisk in the malted milk powder & chocolate; whisk until smooth. Keep warm.