Preheat oven to 180 degree C and line a baking dish with parchment paper
In a prep bowl combine peanut butter, sugar and egg. Mix using a spoon,until well combined
Scoop about a tablespoon of dough and roll into a 1 inch ball. Place on the prepared baking sheet and gently press down each cookie with a fork making a criss-cross pattern
Bake for about 7-10 minutes or until the edges start to turn golden brown
Let cool on the baking sheet for a minute before removing
Cookies will be crunchy on the edges and soft and chewy on the inside