In a large bowl, whisk together the flour, the baking powder, and the salt.
In a separate bowl, whisk together the whole milk, brown sugar, eggs, and the vanilla.
Pour the wet ingredients over the dry, along with the melted butter, then stir to combine.
Let the batter sit for 30 minutes.
Preheat a waffle iron. Grease the waffle iron then cook waffles according to waffle maker instructions. The amount of batter per waffle varies according to the capacity of the waffle iron.
Keep the cooked waffles on a cookie sheet in a preheated low temperature oven until you are ready to serve.
Notes
The number of waffles you make is entirely dependant on the type of waffle maker you use and the amount of batter per waffle.
Feel free to sprinkle berries over the batter just before closing the lid.