Gather the ingredients and set the oven to 350°F (175°C). Prepare baking sheets; no greasing is necessary.

Combine the peanut butter, sugar, and egg in a bowl. Use an electric mixer or a sturdy spoon to beat until the mixture is smooth and evenly combined.

Scoop out portions of dough about 1 inch in diameter and place them on the prepared baking sheet, leaving roughly 2 inches between each.

Gently press each ball with the tines of a fork, first in one direction and then perpendicular to create a crosshatch pattern.

Bake for about 10 minutes, until the edges are set and the centers still look slightly soft. Allow cookies to cool briefly on the sheet, then transfer to a wire rack to finish cooling.

Serve once cooled and enjoy your chewy peanut butter cookies.