In a large bowl whisk together flour, cocoa powder, brown sugar, baking powder and salt.
Make a well in the centre of the dry ingredients; add the eggs, oil (or melted butter), and milk. Mix the wet ingredients into the dry until the batter is well combined and smooth.
Cook waffles according to manufacturers instructions.
Serve warm with powdered sweetener or sugar and melted Nutella or chocolate.
To make a Nutella Ganache: Melt 1/4 cup of Nutella in the microwave for 30-60 seconds until reaching a thinner consistency. Beat in 3-4 tablespoons of milk (it will look like its about to seize, but keep beating)! It will start to look glossy and smooth after about 30 seconds. You’re welcome.