Step 1

Preheat the oven to 350 degrees and prepare a baking sheet by lining with parchment paper. Set aside.

Step 2

In a large bowl or stand mixer, mix the butter and sugar on medium low speed until light and fluffy.

Step 3

Add the egg and vanilla and continue beating on medium low speed until smooth.

Step 4

Slowly add the flour and salt just until fully incorporated - do not overmix.

Step 5

Add the milk 1 tablespoon at a time, using the minimum amount possible to reach a piping consistency.

Step 6

Place the batter in a piping bag, and pipe small circles onto the prepared baking sheet. Add sprinkles if desired. Chill the baking sheets in the refrigerator for at least 20-30 minutes.

Step 7

Bake in the preheated oven for 10 minutes or until the edges of the cookies begin to turn golden brown.

Step 8

Remove from the oven and cool completely before serving.