Preheat a griddle, cast iron pan, or nonstick skillet over medium heat.
In a large bowl, whisk the flour, brown sugar, baking powder, baking soda, salt, cinnamon, ginger, and nutmeg together.
1½ cups all-purpose flour, 2 tablespoons brown sugar, 1½ teaspoons baking powder, ¾ teaspoon baking soda, ½ teaspoon kosher salt, 1½ teaspoons ground cinnamon, ¾ teaspoon ground ginger, ¼ teaspoon ground nutmeg
In a medium bowl, whisk the milk, pumpkin purée, eggs, melted butter, and vanilla extract.
1½ cups milk, ¾ cup pumpkin purée, 2 large eggs, 3 tablespoons unsalted butter, 1 teaspoon pure vanilla extract
Pour the wet ingredients into the dry and mix until just combined. Lumps are okay!
To the hot pan, add enough butter to coat the bottom of the pan. Pour in ⅓ cup of batter. Cook until the edges start to dry and bubbles pop. Flip and cook for another 3-4 minutes until golden on the second side.
Repeat until all of the batter has been used.