This is a Sponsored post written by me on behalf of National Peanut Board for SocialSpark. All opinions are 100% mine. It's Fall Y'all Peanut Butter Muffin Recipe Peanut Butter, Pumpkin, Oats....all the flavors of Fall in a hearty muffin!  Plus, enter to win a NPB prize pack including a $25 Walmart gift card, a