01 -  Preheat oven to 350°F (175°C). Lightly grease two 6-cavity donut pans or a standard muffin pan. 
 02 -  In a large mixing bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, nutmeg, and ginger. Stir in the rainbow sprinkles. 
 03 -  In a separate bowl, whisk pumpkin purée, granulated sugar, light brown sugar, vegetable oil, eggs, vanilla extract, and milk until smooth. 
 04 -  Add wet ingredients to the dry mixture and gently fold together just until no streaks remain. Avoid overmixing. 
 05 -  Spoon or pipe batter evenly into prepared donut pan cavities, filling each about three-quarters full. 
 06 -  Bake for 16–18 minutes, or until a toothpick inserted into a donut comes out clean. 
 07 -  Let donuts cool in pans for 5 minutes. Transfer to a wire rack and cool completely before glazing. 
 08 -  Whisk powdered sugar, 2 tablespoons milk, and vanilla extract until smooth. Add more milk for a drizzling consistency if needed. 
 09 -  Dip cooled donuts into glaze or drizzle over the tops. Immediately sprinkle with extra rainbow sprinkles before the glaze sets.