Brown Butter Pumpkin Donuts

0 Preheat oven to 350°F (175°C) and grease a donut pan.
1 Brown the butter in a saucepan over medium heat until golden and nutty. Let cool slightly.
2 In a large bowl, whisk together the browned butter, pumpkin purée, brown sugar, egg, vanilla, and milk until smooth.
3 In another bowl, whisk together the flour, baking powder, baking soda, pumpkin pie spice, cinnamon, and salt.
4 Add dry ingredients to wet and mix until just combined.
5 Spoon or pipe the batter into the donut pan, filling each about ¾ full.
6 Bake for 10–12 minutes, or until a toothpick comes out clean.
7 Let cool for 5 minutes, then remove from the pan.
8 Dip donuts in icing.