01 - Preheat oven to 350°F. Line a 12-count muffin tray with paper liners.
02 - In a medium mixing bowl, whisk flour, baking powder, baking soda, salt, cinnamon, nutmeg, and cloves until evenly distributed.
03 - In a separate large bowl, whisk pumpkin purée, granulated sugar, light brown sugar, vegetable oil, eggs, and vanilla until smooth.
04 - Add the dry ingredients into the wet mixture. Stir gently with a spatula until just combined; avoid overmixing.
05 - Gently fold in white chocolate chunks, reserving a few for topping if desired.
06 - Divide batter equally among prepared muffin cups, filling each about three-quarters full. Top with reserved white chocolate chunks.
07 - Bake for 20–22 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
08 - Remove from oven and allow muffins to cool in the pan for 5 minutes. Transfer to a wire rack and cool completely before serving.