1. Preheat Oven: Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper.
2. Cream Butter and Sugar: In a large bowl, using an electric mixer, cream the softened butter and granulated sugar together on medium speed until light and fluffy.
3. Add Egg Yolks and Vanilla: Add the egg yolks and vanilla extract to the butter mixture. Continue to beat until well combined.
4. Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour and salt.
5. Mix Dry and Wet Ingredients: Gradually add the dry ingredients to the butter mixture, mixing on low speed. Add the milk and continue to mix until a soft dough forms.
6. Pipe the Cookies: Transfer the dough into a piping bag fitted with a large star tip. Pipe the dough onto the prepared baking sheets into desired shapes, such as circles, “S” shapes, or straight lines.
7. Bake: Bake the cookies in the preheated oven for 10-12 minutes, or until the edges are lightly golden.
8. Cool: Remove from the oven and allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.

Optional Decorations:

• Chocolate Dip: Once cooled, dip the ends of the cookies in melted chocolate and add sprinkles or chopped nuts before the chocolate sets.
• Jam Filling: Create sandwich cookies by spreading a thin layer of raspberry or apricot jam between two cookies.