Chocolate Pretzel Shortbread Cookies - TheSweetNerd

Ingredients

• 2 cups sourdough pretzel nuggets
• 2 cups all purpose flour
• 2/3 cup dutch processed cocoa powder
• 1 teaspoon kosher salt
• 1 teaspoon sea salt flakes
• 1 ½ cups plus 2 tablespoons unsalted butter (13 ounces) at room temperature
• 1 ¼ cup confectioners sugar, sifted
• 2 extra large egg yolks at room temperature
• 2 teaspoons pure vanilla extract