01 -
Preheat oven to 175°C (350°F).
02 -
Mix together peanut butter, sugar, egg, and vanilla extract until a smooth dough forms.
03 -
Form the dough into walnut-sized balls and place them on an ungreased cookie sheet.
04 -
Use a fork to mash down each ball slightly, creating a criss-cross pattern.
05 -
Bake for 8–10 minutes or until golden brown. Remove and let cool before serving.