Preheat your oven to 350°F (175°C). This ensures that your cookies bake evenly and achieve that perfect golden color.
Line your baking sheets with parchment paper. This will prevent the cookies from sticking and allow for easy cleanup.
In a mixing bowl, cream together the softened butter and granulated sugar until light and fluffy. This process incorporates air into the mixture, which helps create a lighter cookie texture.
Beat in the egg yolks one at a time, followed by the almond extract. Make sure everything is well combined.
In another clean bowl, whip the egg whites until stiff peaks form. This step is crucial for achieving the light texture we desire in our cookies.
In a separate bowl, whisk together the all-purpose flour and salt. Gradually add this mixture to the butter mixture, combining well.
Gently fold in the finely chopped slivered almonds, being careful not to deflate the whipped egg whites.
Using a cookie scoop, form balls of dough and roll them in the additional slivered almonds. Place them on the prepared baking sheets, leaving space between each cookie.
Bake in the preheated oven for 12-15 minutes, or until the edges are lightly golden. Keep an eye on them to prevent overbaking.
Once baked, remove the cookies from the oven and let them cool on the baking sheet for a few minutes before transferring them to a wire rack. Once cool, dust the tops with powdered sugar for a beautiful finish.