My Favorite Peanut Butter Cookies

Ingredients:

1 cup (250g) smooth  peanut butter

1/2 cup (100g) granulated sugar

1/2 cup (100g) brown sugar, packed

1 large egg

1 teaspoon (5ml) vanilla extract

1/2 teaspoon baking soda

A pinch of salt

Optional:  Chocolate chips or chopped peanuts for topping

Instructions: