Mix peanut butter [268g], sugar [120g], and brown sugar [120g] in a bowl with a wooden spoon for a couple of minutes. Make a hole in the center.
Add egg [1], baking soda [1 tsp], vanilla extract [1 tsp], and salt (1/4 tsp], and stir to combine until smooth.
Place bowl on a kitchen scale and tare the bowl with the cookie dough in it. Remove approximately 28g of cookie dough and roll it into a ball betwen the palms of your hands. Repeat until cookie dough is finished.
Place cookie dough balls on a baking sheet lined with parchment paper with ample space between them (they spread a lot) and bake at 350°F (180°C) for 10-12 minutes.