01 - Preheat oven to 350 degrees Fahrenheit. Grease and line a 9x5-inch loaf pan with parchment paper.
02 - In a medium mixing bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, nutmeg, and ginger until evenly combined.
03 - In a large bowl, whisk together pumpkin purée, granulated sugar, light brown sugar, eggs, vegetable oil, milk, and vanilla extract until the mixture is smooth and homogenous.
04 - Gradually stir the dry ingredients into the wet mixture, mixing gently with a spatula or spoon until just incorporated. Avoid overmixing to ensure a tender crumb.
05 - Gently fold in the white chocolate chips until evenly distributed throughout the batter.
06 - Transfer the batter to the prepared loaf pan, smoothing the top. Sprinkle additional white chocolate chips over the batter for garnish if desired.
07 - Bake in the preheated oven for 50 to 60 minutes, or until a toothpick inserted in the center emerges clean or with only a few moist crumbs attached.
08 - Let the loaf cool in the pan for 10 minutes, then transfer onto a wire rack to cool completely before slicing.