Whisk together the flour, baking soda, and salt. Set aside.
1 ⅓ cups (170 g) all-purpose flour, ¾ teaspoon baking soda, ¼ teaspoon salt
Using an electric mixer, beat the butter for 1-2 minutes until light and creamy. Add both sugars and continue mixing until completely combined, about 2-3 minutes.
½ cup (115 g) unsalted butter, ½ cup (100 g) granulated sugar, ½ cup (100 g) dark brown sugar
Add the egg, and mix until incorporated. Scrape down the sides of the bowl as needed.
1 large egg
Add the peanut butter and vanilla, and beat until combined.
¾ cup (185 g) creamy peanut butter, 1 teaspoon vanilla extract
Use low speed, and incorporate the dry ingredients just until mixed and no flour streaks remain.
Cover, and refrigerate for at least 1-2 hours.
Preheat the oven to 350°F, and line two large baking sheets with parchment paper.
Pour ⅓ cup of granulated sugar into a small bowl. Roll about 1 tablespoon of cookie dough into a ball, then coat it in sugar.
Place the cookie dough onto the prepared baking sheet, and continue with the remaining dough placing them 2-inches apart. Use a fork to make a criss cross pattern in the dough by pressing down gently on top of each cookie dough ball.
Bake for 10-12 minutes or until the tops are lightly browned but still soft. Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.
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