Preheat oven to 350 degrees and line a cookie sheet with parchment paper

Start by creaming together the sugar and butter in a large mixing bowl

Add in the egg yolks one at a time and beat into the mixture before adding the next one

Mix in the vanilla and salt

In a separate bowl, mix together the flour, baking soda, cream of tartar and then slowly incorporate into your sugar batter .. this takes time, it will seem very dry at first but will come together nicely

Add in the blue Food Coloring Gel and stir to combine

Stir in the while chocolate morsels and the stars / sprinkles until all have been mixed into the batter

Spoon into 1.5 inch balls and place them on your cookie sheet - do no flatten!

Bake for 12 - 13 minutes and remove.. let sit on the cookie sheet for 2-3 minutes before moving the cookies to a wire rack

Let cool and enjoy!!