Preheat oven to 350 degrees. Line two baking sheets with parchment paper, set aside. In a stand mixer with the paddle attachment cream butter and both sugars until light and fluffy, about 3 minutes.
Add in peanut butter and mix for 1-2 minutes. Add in egg and vanilla. Mix until combined and clump free.
Add in flour, salt and baking soda and mix just until combined. Make sure not to overmix.
Scoop out dough and portion into 16 cookie dough balls. Add sugar to a small bowl and roll each cookie in the sugar and place onto the prepared baking sheet.
Using a fork flatten cookies slightly then turn and do the opposite direction to get a crisscross pattern.
Bake cookies for 10 minutes until lightly golden brown and firm on the edges. Remove from the oven and let set for 3-4 minutes. Transfer to cooling rack to cool completely.
Notes
Room temperature Ingredients: Wait until the butter is completely softened and the egg is at room temperature before mixing everything up. This ensures a smooth batter and an awesome cookie!Shorter cooking time: I always like to slightly under bake my cookies. Once they look set around the edges I take them out of the oven and let them continue to cook for 5 minutes longer on the baking sheet. Then I transfer them to a cooling rack to cool completely.Overnight Chill: These cookies can be made a day or two in advance. The longer the cookie dough sits the more the flavors develop.