I haven't tried it but have you thought of using PB2 and making cookies with it? PB2 is a powder that has the protein of peanut butter but has been compressed/dried and you reconstitute it with water. There is a cookie recipe on their site. Although I suspect you don't have it in your pantry at the moment.
An option is no-bake cookies? Oatmeal, cocoa, milk, sugar, butter, peanut butter & vanilla. Quick & easy.