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

In a bowl, add your sugar, egg, and peanut butter. Mix until well combined.

Scoop out 1 tablespoon of cookie dough and place on sheet 1 inch apart. Take a fork and push down in cookie on opposite sides to create a criss-cross pattern and sprinkle with sugar.

Bake for 9-11 minutes. Take the cookies out as soon as they turn golden brown on the sides. They will continue to bake on the tray.

Let cool for 5 minutes and then remove cookies to a cooling rack. Cool completely.