01 -
Whisk together the flour, brown sugar, baking powder, pumpkin pie spice, and kosher salt in a medium bowl until evenly blended.
02 -
In a separate bowl, mix pumpkin purée, egg, whole milk, vanilla extract, and melted butter until smooth and fully incorporated.
03 -
Gently fold the dry ingredients into the wet mixture just until combined, avoiding overmixing to maintain tenderness.
04 -
Scoop spoonfuls of batter into evenly sized rounds onto a parchment-lined or lightly greased tray.
05 -
Heat the air fryer to 360°F (182°C) before cooking.
06 -
Arrange donut holes in a single layer with slight spacing. Cook in batches for 8 to 10 minutes until golden and puffed.
07 -
While warm, brush donut holes with melted butter, then roll evenly in a mixture of granulated sugar and ground cinnamon.