Gluten Free Lemonades Girl Scout Cookies

• Preheat your oven to 325°F. Line rimmed baking sheets with unbleached parchment paper, and set them aside.

Make the Cookie Dough.

• In a large bowl, place the flour, xanthan gum, confectioners’ sugar, salt and True Lemon crystals, and whisk to combine well. Add the lemon zest, and whisk again to combine, breaking up any clumps in the lemon zest, which tends to stick to itself. Add the butter and then the egg, and mixing to combine after each addition. The dough will come together and should be smooth and relatively thick. Place the dough between two sheets of unbleached parchment paper and roll into a rectangle a bit more than 1/8 inch thick. Place the dough on a flat surface and place in the freezer until firm (5 to 7 minutes).

Make the Filling.

• In the bowl of a stand mixer fitted with the paddle attachment, place the butter and beat on medium speed until light and fluffy. Add the salt, True Lemon crystals and confectioners’ sugar, and mix on low speed until the sugar is absorbed. Turn the mixer to medium speed and mix until the filling comes together (3 to 4 minutes). It will be very thick. Add the lemon juice, and 2 teaspoons milk, and mix on medium speed until the filling becomes smoother and creamier, but still thick. Add more milk if necessary to reach the desired consistency. Transfer the filling to a pastry bag fitted with a medium-sized piping tip (I used a #104 tip in an effort to make a flat layer of filling), and set it aside.

Bake the Cookies.

• Once the cookie dough is chilled, cut out rounds using a 2 1/4 inch round cookie cutter. Place the cutouts on the prepared baking sheets less than an inch apart from one another (they will not spread during baking). On half of the cookie cutouts, press another round cookie cutter that is slightly smaller than 2 inches about 1/4 inch in from the edge of each cookie and press firmly but gently to create an indentation in the dough. Be careful not to press all the way through the dough. These will be the tops of your sandwich cookies. Place the baking sheets, one at a time, in the center of the preheated oven and bake, rotating once, until just beginning to brown around the edges (about 10 minutes). Remove from the oven and allow the cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

Assemble the Cookies.

• Turn over the half of the cookies without the indentation, and pipe a generous amount of filling in a single layer on each overturned cookie. Top with the remaining cookies (those with the indentation, facing up) to create sandwiches, pressing down gently to force the filling to the very edge of the cookies. Allow to sit at room temperature (or in the refrigerator) until the filling is set. Serve chilled or at room temperature.