Preheat your oven to 350°F (175°C) and line a cupcake pan with liners.
In a mixing bowl, cream together the butter and sugar until light and fluffy.
Add the eggs one at a time, beating well after each addition.
In another bowl, whisk together the flour, chai spice mix, baking powder, and salt.
Gradually add the dry ingredients to the butter mixture, alternating with the milk, beginning and ending with the dry ingredients.
Divide the batter evenly among the cupcake liners.
Bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cupcakes to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.