Preheat oven to 300 degrees F. (149 C).
Line a baking sheet with parchment paper.
In a medium bowl, combine butter, granulated sugar, brown sugar, and cinnamon. Mix It for 3 minutes on medium speed with an electric mixer until light and fluffy.
Add two eggs, yolk (reserve the egg white), and vanilla and mix again until combined.
In another bowl, combine baking powder, salt, almond meal, and flour. With the mixer on its lowest setting, gradually mix the dry mixture into the butter and sugar mixture, mix thoroughly and make sure all the ingredients are combined.
Flour your hands, roll dough into a smooth ball, and cut in half with a knife. Roll each piece into an 11 inches long cylinder by 2 inches diameter and place them 3 inches apart on an ungreased baking sheet.
Beat the reserved egg white in a bowl with a whisk for 15 seconds. Brush the logs with the beaten egg white, save the rest (and use it for something else later). Sprinkle one teaspoon of turbinado sugar on the logs.
Set the temperature of the oven to 275 degrees. Bake for approximately 45 minutes, turning each slice once until brown and thoroughly baked. Place it on a cooling rack to cool.