Using an electric mixer on high speed, beat egg whites until soft peaks form. Set aside.
Turn waffler maker on to preheat.
In a large bowl whisk together flour, hot chocolate powder, baking powder, baking soda, brown sugar and salt.
In a second bowl add buttermilk, egg yolks, oil and vanilla. Mix lightly. Pour wet ingredients into into dry mixture along with chopped chocolate and stir until combined without over mixing.
Carefully fold egg whites into batter.
When waffle maker is ready spray with oil.
Using a 1/2 cup measuring scoop add your batter to waffle maker and cook until ready. Transfer to a dish and keep warm in oven until all waffles made and ready to eat.
Serve with marshmallows, fresh strawberries, chocolate syrup and your favourite syrup.