Gluten-Free Chocolate Peanut Butter Pie

I love making a treat for my close friend's birthdays. So every year I ask them what they want and I do a gluten-free version of their treat of choice. Sometimes they like the basics, like chocolate cake, and other times they prefer to be a little more difficult by simply saying they want "pie". Our good friend just did this for his birthday, telling me that he simply wanted "pie" with no other suggestions at all.