Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners or grease well.
In a small saucepan, bring the apple cider to a boil over medium heat. Reduce heat to low and let it simmer until it is reduced to about 1/4 cup (approximately 10-15 minutes). Allow it to cool slightly.
In a large mixing bowl, whisk together the flour, baking powder, baking soda, ground cinnamon, nutmeg, and salt until combined.
In another bowl, beat together the sugar, melted butter, egg, and vanilla extract until smooth. Stir in the reduced apple cider.
Gradually add the dry ingredients to the wet ingredients, mixing gently until just combined. Do not overmix; a few lumps are okay.
Spoon the batter evenly into the prepared muffin tin, filling each muffin cup about 2/3 full.
Bake for 15-18 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
While the muffins are baking, mix the brown sugar and cinnamon in a shallow bowl.
Once the muffins are done, let them cool for about 5 minutes in the pan, then remove and roll each warm muffin in the cinnamon sugar mixture until fully coated.
Serve warm or at room temperature and enjoy with a cup of hot cider for the ultimate experience!
Notes
Arrange the muffins on a decorative platter, and consider garnishing with a few fresh apple slices or a sprinkle of extra cinnamon sugar on top for added visual appeal.