Walnut Dulce-De-Leche Cookies

Add flour, powdered sugar, granulated sugar, and salt to your mixer’s bowl and stir on lowest speed with pedal attachment for 1 minute. While still stirring on lowest speed, add cold butter 1 tbsp at a time. Continue stirring until the mixture resembles corn meal like texture (about 5 minutes). Add 1 beaten egg and vanilla, while still stirring on lowest speed. Dough will come together very quickly at this point, do not overmix. As soon as the dough started coming off the sides of the bowl, turn off the mixer and transfer the dough onto the plastic wrap. Loosely form a ball, wrap into plastic wrap and refrigerate for 30 minutes. After the dough has firmed up in refrigerator for 30 minutes, remove it from the plastic wrap. Pinch out approximately a half teaspoon amount of dough and form small balls. Preheat the Oreshki/Walnut Cookies pan/form according to instructions. Fill each cavity of the form with the dough balls and cook each side for about 2-3 minutes, following the instructions of the form/pan. Once all walnut/oreshki baked halfs have cooled, fill with approximately half a teaspoon of the dulce de leche and adhere together. Refrigerate the filled cookies for at least 30 minutes. Optional: dust with powdered sugar before serving. Enjoy!🌲