The process is pretty much foolproof, but be sure to follow these peanut butter no bake cookies to really nail it. There is a “wrong” kind of peanut butter. We highly recommend insist upon using a smooth, processed peanut butter, like Skippy or Jif.
Js, the natural stuff can be too runny and inconsistent. The lack of homogenization can really throw off the texture, which makes them fussy and hard to set properly. Even though most processed peanut butters already have salt added, it’s not quite enough to balance out the sugar here. Do not use quick-cooking or steel cut! The former has an almost powdery chew, and the latter might crack a tooth or two.
Regular, old-fashioned rolled oats are the way to go. It sounds weird, but it’s necessary. Believe it or not, they set up at room temperature! And they can be stored at room temperature too, for 3 to 4 days.