Whisk together flour, sugar, baking powder, cinnamon, ginger, and salt in a large bowl. Add milk, pumpkin puree, eggs, oil, and vanilla extract. Stir to combine. This is a thick batter. It’s fine if a few lumps remain.
Spice Note: You can replace the cinnamon and ginger with 2 ½ teaspoons pumpkin pie spice.