In a separate medium bowl, whisk the melted butter, brown sugar, and granulated sugar together until combined, about 1 minute.
1/2 Cup Unsalted Butter, 2/3 Cup Brown Sugar, 1/3 Cup Granulated Sugar
Whisk in the eggs one at a time until smooth then whisk in the vanilla and apple cider.
2 Large Eggs, 3/4 Cup Apple Cider, 2 teaspoons Pure Vanilla Extract
Slowly add the wet ingredients to the dry ingredients and stir gently until combined. Scraping down the sides of the bowl with a rubber spatula as needed.
Fill the cupcake liners 3/4 of the way full with batter.
Bake for 21–23 minutes, or until a toothpick inserted in the center comes out clean.
Remove from the oven and allow to cool completely on a wire rack before frosting.
Make the frosting:
In a large bowl using a handheld or stand mixer fitted with a paddle attachment, beat the cream cheese and butter together on high speed until smooth and creamy, about 2 minutes.
8 Ounces Full-Fat Cream Cheese, 1/2 Cup Unsalted Butter
Add 3 confectioners' sugar, vanilla, cinnamon and salt and beat again on high speed for at least 3 minutes.
3 1/4 Cups Confectioners' Sugar, 1 teaspoon Pure Vanilla Extract, 1 teaspoon Ground Cinnamon, 1/8 teaspoon Salt
Place the frosting in a piping bag and pipe on top of cooled cupcakes.
Store in an air tight container in the refrigerator for up to 5 days.
Notes
*Apple cider: Note that the apple cider we use is non-alcoholic, unflavored cider. In some parts of the world, this is called mulled cider (except you want to buy apple cider that's just apples and no spices!).
Baked cupcakes without frosting can be frozen for up to 3 months.