To make the batter: Melt butter in a saucepan over medium heat. The butter will begin to foam. Make sure you whisk consistently during this process. After a couple of minutes, the butter will begin to brown on the bottom of the saucepan; continue to whisk and remove from heat as soon as the butter begins to brown and give off a nutty aroma. Remove from heat and immediately transfer the butter to a bowl to prevent burning. Set aside to cool for a few minutes.
In a medium bowl whisk together flour, brown sugar, baking powder, salt, cinnamon, nutmeg, and ginger.