Preheat oven to 350 degrees. Line a baking sheet with foil.
Mix together peanut butter, sugar and egg.
Optional to mix in sprinkles. Just a quick stir.
Drop by spoonfuls (or cookie scoops) on to prepared baking sheet.
Bake for 8-10 minutes or until edges start to golden.
Let sit for 1 minute and then move to a cookie rack to cool.