01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the gluten-free flour, baking soda, baking powder, and salt.
03 - In a large bowl, beat the softened butter, brown sugar, and granulated sugar until creamy and fluffy, about 2 minutes.
04 - Add the egg and vanilla extract to the butter mixture, beating until well combined.
05 - Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
06 - Fold in the chocolate chips until evenly distributed throughout the dough.
07 - Drop heaping tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart.
08 - Dollop ½ teaspoon of peanut butter onto each dough mound. Use a toothpick or knife to gently swirl the peanut butter into the top of each cookie.
09 - Bake for 10-12 minutes, or until the edges are lightly golden and the centers look just set.
10 - Cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely.