Preheat the oven to 350 degrees Fahrenheit. Line two baking trays with parchment paper or silicone baking mats and set them aside.

In a medium mixing bowl, whisk together the flour, ginger, cinnamon, nutmeg, baking powder, baking soda, and salt. Set this bowl aside.

In the bowl of an electric mixer fitted with the paddle attachment, combine the butter and brown sugar.

Beat on low speed until the mixture is combined and fluffy, about two minutes.

Add the egg, pumpkin puree, and vanilla extract to the butter-sugar mixture. Stir until everything is well combined.

Gradually add the dry ingredients to the wet mixture and continue to mix until everything is well incorporated.

Gently fold in the white chocolate chips until evenly distributed throughout the dough.

Using a spoon or cookie scoop, scoop about 2 tablespoons of dough and place them on the lined baking trays, spacing them about 1 inch apart.

Place the baking trays in the preheated oven and bake for about 12 minutes, or until the bottoms of the cookies are lightly browned.

If desired, add more white chocolate chips on top of the warm cookies right after they come out of the oven.

Let the cookies cool on the baking trays for a few minutes before transferring them to a wire rack to cool completely. Enjoy your delicious Pumpkin White Chocolate Chip Cookies!