01 -
Preheat oven to 350°F. Lightly grease two standard donut pans.
02 -
In a small saucepan over medium heat, simmer apple cider until reduced to 1/2 cup. Allow to cool slightly.
03 -
In a large bowl, whisk together all-purpose flour, baking powder, baking soda, salt, ground cinnamon, and ground nutmeg.
04 -
In a separate bowl, whisk together reduced apple cider, granulated sugar, brown sugar, eggs, unsweetened applesauce, vegetable oil, and vanilla extract until smooth.
05 -
Add wet ingredients to dry ingredients and mix until just combined; avoid overmixing.
06 -
Spoon or pipe the batter into prepared donut pans, filling each cavity about three-quarters full.
07 -
Bake in the preheated oven for 10 to 12 minutes or until a toothpick inserted into a donut emerges clean.
08 -
Allow donuts to cool in the pans for 5 minutes before transferring to a wire rack.
09 -
In a shallow bowl, mix granulated sugar and ground cinnamon. Brush each warm donut with melted butter, then dip in cinnamon sugar to coat thoroughly.