Honestly of you want to make a peanut butter and chocolate treat you can mix them together and mix in some dark chocolate wafers or baking chocolate without a waxy coating. Gently heat on a double boiler or slow cooker on low until melted and stir well. Let it cool before you pour as the mix will retain heat well. Once you can safely touch the boiler/pot with your bare hands without having to put it down after really any max time. If it’s too hot to hold it’s too hot to pour.
Alternatively you can mix with marshmallows while it’s cooling down and mix with rice crispy cereal or Cocoa pebbles make tasty treats that also treat you.