Brown Sugar Spiced Belgian Waffles

1. Take the butter and let it melt in a pot on the stove over medium heat and lightly sizzle until it turns an amber color. Remove from heat. Set it aside and let it cool
2. In a large mixing bowl, whisk together the flour, baking powder, salt, allspice, cinnamon and brown sugar until there are no lumps. In another bowl, thoroughly whisk together the milk, eggs, and cooled brown butter.
3. Pour the wet ingredients into the bowl of dry ingredients and stir together until just combined into a smooth batter. If you wish, you can make the batter the night before and let it rest and chill in the refrigerator until morning.
4. Preheat your waffle iron and preheat your oven to 200 F. Scoop 1/4 of the batter into the waffle iron and let it cook for about 4 minutes (follow the directions of your particular waffle iron for best results). Transfer the cooked waffle to a tray in the oven to keep it warm while you repeat cooking the rest of the batter.
5. When they are all done, dust them with powdered sugar, drizzle with maple syrup and if desired sprinkle with the toasted walnuts.
6. Serve and enjoy!