PREP TIME: 1 HOUR 15 MINUTES
COOK TIME: 15 MINUTES
Mix the Dry Ingredients: In a large mixing bowl, whisk together the all-purpose flour, almond flour/meal, kosher salt, and ground cinnamon, and stir until evenly combined.
Mix the Wet Ingredients: In a stand mixer, cream together the butter and sugar. When the mixture is light and fluffy, add the vanilla extract, egg yolk, and zest. Beat for an additional 30 seconds or until combined.
Add the Dry Ingredients to the Wet Ingredients: Gradually add the dry ingredients to the wet ingredients, pause to scrape down the sides, if you need to, and continue until they are combined.