LIne baking sheet with parchment paper
Slice cool but pilable butter into 1 TBS slices
Cream in mixer
Add sugar and cream additional 2 to 3 minutes
Beat in eggs, vanilla, and milk until creamy
In another bowl, add flour (measure using scoop and level method), salt, baking powder, and nutmeg
Shift dry ingredients into wet ingredients
Mix together until all is combined
Scoop 1 inch balls of cookie dough and place on baking sheet, continue until all dough is scooped into balls
Refrigerate for 2 hours at minimum
Remove dough for fridge
Roll each ball of dough into a smoother ball
Pour each bag of colored sanding sugar into its own bowl
Roll each ball in sanding sugar to cover completely
Divide number of cookie dough balls evenly between the colors using, so you have same amount of balls per color
Return to fridge for 30 minutes
Preheat oven to 400 degrees
Line another baking sheet with parchment paper
Remove 12 cookie balls from fridge and place on baking sheet, keep remaining balls in fridge in between baking
Bake for 7 minutes
Remove from oven, bang pan down slightly on counter, to help flatten cookies
Cool for 5 minutes, remove to cooling rack to continue cooling
Store in airtight container
Repeat until all cookies are baked