Preheat your oven to 350°F (175°C) and grease a 12-cup bundt pan.

In a mixing bowl, whisk together the flour, baking powder, salt, cinnamon, and nutmeg.

In a stand mixer, beat together butter, brown sugar, and granulated sugar until fluffy. Add eggs one at a time and stir in vanilla.

Gradually combine the flour mixture and apple cider into the butter mixture, alternating between the two.

Pour the batter into the prepared bundt pan and bake for 40-50 minutes until golden brown.

In a saucepan, simmer apple cider until it thickens to about ½ cup; stir in salted butter until melted for glaze.

Cool the cake for 10-15 minutes, then glaze while still warm and sprinkle with cinnamon sugar.