Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a mixing bowl, combine peanut butter, sugar, egg, vanilla extract, baking soda, salt, and flour. Stir until smooth and well combined. (Insert flour here in the instructions)

Roll the dough into 1-inch balls and place them on the prepared baking sheet, spacing them about 2 inches apart.

Flatten each dough ball with a fork, creating a crisscross pattern.

Bake for 10-12 minutes, or until the edges are golden.

Let the cookies cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.