01 -
Preheat the oven to 175°C. Line large rimmed baking sheets with parchment paper.
02 -
In a medium bowl, whisk together flour, baking soda, baking powder, and salt until evenly mixed.
03 -
In an electric mixer bowl, beat butter, granulated sugar, and brown sugar on medium-high speed until smooth and combined, about 2 minutes. Scrape down the sides and base of the bowl.
04 -
Beat in the peanut butter until fully incorporated, then add the egg and vanilla extract, mixing until uniform.
05 -
On low speed, add the flour mixture gradually, mixing just until combined and no dry streaks remain.
06 -
Place rolling sugar in a small bowl. Using a medium spring-loaded scoop, portion dough into 1.5-tablespoon balls. Roll each ball between palms to smooth, then coat in granulated sugar.
07 -
Arrange dough balls on the prepared baking sheets spaced 5 centimeters apart. Flatten gently with the back of a fork in a crisscross pattern.
08 -
Bake for 10–12 minutes or until edges are lightly golden. Do not overbake.
09 -
Allow cookies to cool on baking sheets for 10 minutes, then transfer to a wire rack to cool completely.