01 - Preheat oven to 350°F. Grease and line a 9x5-inch loaf pan with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, nutmeg, ginger, and cloves.
03 - In a large bowl, whisk pumpkin purée, eggs, oil, milk, granulated sugar, brown sugar, and vanilla extract until smooth.
04 - Add dry ingredients to wet mixture and gently fold with a spatula until just combined; avoid overmixing.
05 - Fold chopped walnuts into the batter evenly.
06 - Pour batter into prepared loaf pan and smooth the top.
07 - Bake for 50 to 60 minutes, until a toothpick inserted in the center comes out clean or with a few moist crumbs.
08 - Allow loaf to cool in pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.