Preheat oven to 350°F and line 2 baking sheets with parchment paper. NOTE: The video says 325℉ - this is incorrect.

In a medium bowl, whisk together flour, salt, and baking soda then set aside.

In the bowl of a standing mixer with the paddle attachment or using a hand mixer, beat peanut butter and butter together until smooth.

Add in the granulated and brown sugars and beat until light and fluffy, then mix in the egg and vanilla extract.

Pour the dry ingredients into the bowl and mix until *just* combined. It is important not to over-mix the dough!

Use a cookie scoop or your hands to form 1.5 tbsp-sized balls of dough and bake one tray at a time for 8-13 minutes. The middles will look soft and the edges should look set, but not golden brown.

When removing the cookies from the oven, gently but firmly bang the pan on the edge of the counter a couple times if they look too puffy. Let the cookies cool on a baking sheet for 10 minutes then transfer to a cooling rack to cool completely.