Before you start, make sure all your ingredients are at room temperature. This will help in achieving a smooth and creamy dough. Measure out 100g of butter, 100g of ground walnuts, and the other ingredients listed in your shopping list.
In a mixing bowl, use an electric mixer or a whisk to cream together the softened butter and 2 tablespoons of powdered sugar until light and fluffy. This should take about 3-4 minutes.
Stir in 1 teaspoon of vanilla paste and add the 2 egg yolks one at a time. Mix until well combined. The mixture should be smooth and creamy.
Gradually add the ground walnuts and 200-220g of flour, mixing until a soft dough forms. Be careful not to overmix, as this can lead to dense cookies.
Take small portions of dough and roll them into crescent shapes. Place each cookie on a baking sheet lined with parchment paper, leaving some space between each one to allow for spreading.
Preheat your oven to 180°C (350°F). Bake the cookies for 12-15 minutes, or until they are lightly golden. Keep an eye on them, as they can brown quickly.
Once baked, remove the cookies from the oven and let them cool on a wire rack. Once they are cool, dust with powdered sugar for an elegant finish.
