Nut-Free Cookie? We need a nut-free option. Is there a different chocolate chip cookie recipe that you would recommend?

I'm thinking that sunflower seed butter would make a great substitute for the peanut butter in this Frosted Peanut Butter Chocolate Chip Celebration Cookie, to make it nut-free. That's what I'd try! Let us know, please, what you do, and how it turns out. Thanks so much. ;o)