To the bowl of batter add the eggs, melted butter, brown sugar, white sugar, baking powder, baking soda, vanilla, cinnamon, ginger, nutmeg, and salt. Gently whisk the batter until it's fairly smooth, a few lumps are okay.
2 large eggs, 3 tbsp (42g) butter, melted and cooled, 1/4 cup (50g) brown sugar, 1/4 cup (50g) granulated white sugar, 1 1/2 tsp vanilla extract, 1 1/2 tsp ground cinnamon, 1/2 tsp ground ginger, 1/4 tsp ground nutmeg, 1 1/2 tsp baking powder, 1/2 tsp baking soda, 1/2 tsp salt