3-Ingredient Peanut Butter Cookies 1 Cup of Peanut Butter 1 Cup of Sugar 1 Large Egg As with any cookie with sugar and some kind of butter-like ingredient, "creaming" the butter and sugar is vital for the proper texture. It must be beat together well. Options: I used Cashew Butter and Peanut butter because I needed to use it up. It was very good. You can use crunchy or creamy peanut butter, your choice. I have not tried brown sugar yet. It should be fine. You can add some vanilla for taste. You can also add 1 teaspoon or less of baking soda to make them less dense. Bake at 350F for 10 minutes. Don't bake too long and make hockey pucks. Seen this on lots of web sites, so it's not my recipe.