In the bowl of stand mixer fitted with the paddle attachment cream together the butter, sugar, salt, and vanilla bean. Scrape the sides of the bowl and thoroughly mix.
Add the egg yolks and vanilla extract and mix well.
Next, add the almond flour and mix for about 2 minutes.
Add the flour and baking powder mix slowly until incorporated and then mix on high for 1 minute.
Divide the dough in two portions, wrap the dough in plastic wrap and chill for about 20 minutes.
Preheat the oven to 350°F, if convection oven preheat to 325°F. Line cookie sheets with parchment paper
Shape one portion of dough into a cylinder about 2 inches round. Cut the dough into pieces about 1/4 inch long. Form the pieces into finger-thick cylinders and make the ends slightly thinner at the ends. Shape them into crescents and place them on the cookie sheet.
Work the second portion of dough the same way.
Bake for 10 minutes. After baking, place the cookies right next to each other and sprinkle with vanilla sugar, powdered sugar, or cinnamon sugar while the cookies are still warm.
Cookies will keep for three weeks in an airtight container.
Notes
To make vanilla sugar, store vanilla beans and/or deseeded pods in granulated sugar for a few days in an airtight container.This recipe will make about 30 cookies all depending on the size of the crescents. The recipe is prepared by using a scale, not with cups.Formula adapted from Dr. Oetker.