Crescent Butter Biscuits

Directions

1. 1
   Combine all-purpose flour, almond flour, and sugar in a bowl; rub in butter using your fingers until coarse crumbs form. Add egg yolks and work into a smooth dough. Wrap dough in plastic wrap and chill in the refrigerator for 1 hour.
2. 2
   Preheat oven to 350 degrees F (175 degrees C). Line a baking sheet with parchment paper.
3. 3
   Turn dough onto a floured work surface; roll into long, thin pieces. Cut into 2-inch pieces and shape each piece into a crescent-shape. Place crescents on the prepared baking sheet.
4. 4
   Bake in preheated oven until lightly golden, 10 to 15 minutes. Immediately roll the crescents in vanilla sugar while hot. Set aside to cool.