In a small saucepan, heat Southern Apple Hard Cider over low heat for about 20-30 minutes (until the liquid is reduced to about 1/2 cup)
Preheat oven to 350°F. Spray doughnut pans or you can use a mini muffin pan flipped upside-down. Set pans aside.
Combine flour, baking powder, cinnamon, nutmeg, and salt in a bowl.
In a separate bowl, whisk together the egg, melted butter, granulated sugar, brown sugar, milk, and vanilla extract. Once combined, pour both bowls of ingredients together. Add the Southern Apple Hard Cider, and whisk everything together until the batter is thick.
Fill the doughnut-pan wells 3/4 full
Bake for 10-12 minutes in the oven, until lightly browned. The doughnuts should bounce right back when poked.
Let cool for 5 minutes
Combine the granulated sugar and cinnamon together
Melt the 6 tablespoons of butter in a bowl
Coat the doughnuts in butter, then coat the tops of the doughnuts with cinnamon sugar.