Preheat your oven to 350°F (175°C).
In a mixing bowl, combine the peanut butter and sugar until well blended.
Add the egg and vanilla extract, mixing until smooth.
In a separate bowl, whisk together the baking soda and salt.
Gradually add the dry ingredients to the wet mixture, stirring until combined.
Using a tablespoon, scoop out dough and roll into balls.
Place the dough balls on a baking sheet lined with parchment paper.
Flatten each ball slightly with a fork, creating a crisscross pattern.
Bake in the preheated oven for 10 minutes or until golden.
Allow to cool on the baking sheet for a few minutes before transferring to a wire rack.